Provided by: mutt_1.5.20-4ubuntu1_i386 bug

NAME

       muttrc - Configuration file for the Mutt Mail User Agent

DESCRIPTION

       A  mutt  configuration  file  consists of a series of “commands”.  Each
       line of the file may contain  one  or  more  commands.   When  multiple
       commands are used, they must be separated by a semicolon (“;”).

       The  hash  mark, or pound sign (“#”), is used as a “comment” character.
       You can use it to annotate your initialization file. All text after the
       comment character to the end of the line is ignored.

       Single  quotes  (“’”)  and  double  quotes  (“"”)  can be used to quote
       strings  which  contain  spaces  or  other  special  characters.    The
       difference  between  the two types of quotes is similar to that of many
       popular shell programs, namely that a single quote is used to specify a
       literal  string  (one  that  is  not interpreted for shell variables or
       quoting with a backslash [see next  paragraph]),  while  double  quotes
       indicate  a  string  which should be evaluated.  For example, backticks
       are evaluated inside of double quotes, but not single quotes.

       \ quotes the next character, just as in shells such as  bash  and  zsh.
       For  example,  if  want to put quotes (“"”) inside of a string, you can
       use “\” to force  the  next  character  to  be  a  literal  instead  of
       interpreted character.

       “\\”  means  to insert a literal “\” into the line.  “\n” and “\r” have
       their usual C meanings of linefeed and carriage-return, respectively.

       A “\” at the end of a line can be used to split commands over  multiple
       lines,  provided  that  the  split points don’t appear in the middle of
       command names.

       It is also possible to substitute the output of a Unix  command  in  an
       initialization  file.  This is accomplished by enclosing the command in
       backticks (‘command‘).

       UNIX environment variables can be accessed like the way it is  done  in
       shells  like  sh and bash: Prepend the name of the variable by a dollar
       (“⇑”) sign.

COMMANDS

       alias [-group name [...]] key address [, address [ ... ]]
       unalias [ *  | key ]

              alias defines an alias key for the given addresses. Each address
              will be resolved into either an email address (user@example.com)
              or a named email address  (User  Name  <user@example.com>).  The
              address  may  be  specified  in  either format, or in the format
              “user@example.com  (User  Name)”.   unalias  removes  the  alias
              corresponding  to  the given key or all aliases when “*” is used
              as an argument. The optional -group argument to alias causes the
              aliased address(es) to be added to the named group.

       group [-group name] [-rx EXPR [ ... ]] [-addr address [ ... ]]
       ungroup [-group name ] [ * | [[-rx EXPR [ ... ]] [-addr address [ ... ]]]

              group  is  used  to  directly  add  either  addresses or regular
              expressions to the specified  group  or  groups.  The  different
              categories  of  arguments  to  the  group  command can be in any
              order. The flags  -rx  and  -addr  specify  what  the  following
              strings  (that cannot begin with a hyphen) should be interpreted
              as:  either  a  regular  expression   or   an   email   address,
              respectively.   ungroup  is  used to remove addresses or regular
              expressions from the specified group or groups.  The  syntax  is
              similar  to  the  group command, however the special character *
              can be used to empty a group of all of its contents.

              These address groups can  also  be  created  implicitly  by  the
              alias,  lists,  subscribe  and alternates commands by specifying
              the optional -group option.

              Once defined, these address groups can be used  in  patterns  to
              search for and limit the display to messages matching a group.

       alternates [-group name] regexp [ , regexp [ ... ]]
       unalternates [ *  | regexp [ , regexp [ ... ]] ]

              alternates  is  used  to  inform  mutt about alternate addresses
              where you receive mail;  you  can  use  regular  expressions  to
              specify  alternate  addresses.   This  affects mutt’s idea about
              messages from you, and messages addressed to you.   unalternates
              removes  a regular expression from the list of known alternates.
              The -group flag causes all of the subsequent regular expressions
              to be added to the named group.

       alternative_order type[/subtype] [ ... ]
       unalternative_order [ *  | type/subtype] [...]

              alternative_order  command  permits  you  to  define an order of
              preference which is used by mutt to determine which  part  of  a
              multipart/alternative body to display.  A subtype of “*” matches
              any subtype, as does  an  empty  subtype.    unalternative_order
              removes entries from the ordered list or deletes the entire list
              when “*” is used as an argument.

       auto_view type[/subtype] [ ... ]
       unauto_view type[/subtype] [ ... ]

              This  commands  permits  you  to  specify   that   mutt   should
              automatically  convert  the  given MIME types to text/plain when
              displaying  messages.   For  this  to  work,  there  must  be  a
              mailcap(5)  entry for the given MIME type with the copiousoutput
              flag set.  A subtype of “*” matches  any  subtype,  as  does  an
              empty subtype.

       mime_lookup type[/subtype] [ ... ]
       unmime_lookup type[/subtype] [ ... ]

              This command permits you to define a list of "data" MIME content
              types for which mutt will try to determine the actual file  type
              from the file name, and not use a mailcap(5) entry given for the
              original  MIME  type.    For   instance,   you   may   add   the
              application/octet-stream MIME type to this list.

       bind map1,map2,... key function
              This  command  binds  the given key for the given map or maps to
              the given function. Multiple maps may be specified by separating
              them with commas (no whitespace is allowed).

              Valid  maps are: generic, alias, attach, browser, editor, index,
              compose, pager, pgp, postpone, mix.

              For more information on keys and functions, please  consult  the
              Mutt Manual.

       account-hook [!]regexp command
              This  hook  is  executed  whenever  you access a remote mailbox.
              Useful to adjust configuration settings to different IMAP or POP
              servers.

       charset-hook alias charset
              This  command  defines  an  alias  for a character set.  This is
              useful to properly display messages  which  are  tagged  with  a
              character set name not known to mutt.

       iconv-hook charset local-charset
              This command defines a system-specific name for a character set.
              This is useful when your system’s iconv(3)  implementation  does
              not  understand  MIME  character set names (such as iso-8859-1),
              but instead insists on being  fed  with  implementation-specific
              character  set  names  (such as 8859-1).  In this specific case,
              you’d put this into your configuration file:

              iconv-hook iso-8859-1 8859-1

       message-hook [!]pattern command
              Before mutt displays (or formats for replying or  forwarding)  a
              message which matches the given pattern (or, when it is preceded
              by an exclamation mark, does not match the pattern),  the  given
              command  is  executed.   When multiple message-hooks match, they
              are  executed   in   the  order  in  which  they  occur  in  the
              configuration file.

       folder-hook [!]regexp command
              When  mutt enters a folder which matches regexp (or, when regexp
              is preceded by an exclamation mark, does not match regexp),  the
              given command is executed.

              When  several  folder-hooks  match a given mail folder, they are
              executed in the order given in the configuration file.

       macro map key sequence [ description ]
              This command binds the given sequence of keys to the  given  key
              in  the given map or maps.  For valid maps, see bind. To specify
              multiple maps, put only a comma between the maps.

       color object foreground background [  regexp ]
       color index foreground background [  pattern ]
       uncolor index pattern [ pattern ... ]

              If your terminal supports color, these commands can be  used  to
              assign  foreground/background  combinations  to certain objects.
              Valid objects are: attachment, body, bold,  header,  hdrdefault,
              index,  indicator,  markers,  message,  normal, quoted, quotedN,
              search, signature, status, tilde, tree, underline.  The body and
              header  objects  allow  you  to  restrict  the colorization to a
              regular expression.  The index  object  permits  you  to  select
              colored messages by pattern.

              Valid  colors include: white, black, green, magenta, blue, cyan,
              yellow, red, default, colorN.

       mono object attribute [ regexp ]
       mono index attribute [ pattern ]

              For terminals which don’t support color, you  can  still  assign
              attributes  to  objects.   Valid attributes include: none, bold,
              underline, reverse, and standout.

       [un]ignore pattern [ pattern ... ]
              The ignore command permits you to specify  header  fields  which
              you  usually  don’t  wish  to  see.   Any header field whose tag
              begins with an “ignored” pattern will be ignored.

              The unignore command permits you to define exceptions  from  the
              above mentioned list of ignored headers.

       lists [-group name] regexp [ regexp ... ]
       unlists regexp [ regexp ... ]
       subscribe [-group name] regexp [ regexp ... ]
       unsubscribe regexp [ regexp ... ]

              Mutt  maintains  two  lists  of mailing list address patterns, a
              list of subscribed mailing lists, and a list  of  known  mailing
              lists.   All  subscribed  mailing lists are known.  Patterns use
              regular expressions.

              The lists command adds a mailing list address  to  the  list  of
              known mailing lists.  The unlists command removes a mailing list
              from the lists of  known  and  subscribed  mailing  lists.   The
              subscribe  command adds a mailing list to the lists of known and
              subscribed mailing lists.  The unsubscribe  command  removes  it
              from  the list of subscribed mailing lists. The -group flag adds
              all of the subsequent regular expressions to the named group.

       mbox-hook [!]pattern mailbox
              When mutt changes  to  a  mail  folder  which  matches  pattern,
              mailbox  will  be used as the “mbox” folder, i.e., read messages
              will be moved to that folder when the mail folder is left.

              The first matching mbox-hook applies.

       mailboxes filename [ filename ... ]
       unmailboxes [ * | filename ... ]

              The mailboxes specifies folders which can receive mail and which
              will  be  checked  for  new  messages.   When  changing folders,
              pressing space will cycle through folders with  new  mail.   The
              unmailboxes  command is used to remove a file name from the list
              of folders which can receive mail.  If "*" is specified  as  the
              file name, the list is emptied.

       my_hdr string
       unmy_hdr field

              Using  my_hdr, you can define headers which will be added to the
              messages you compose.  unmy_hdr  will  remove  the  given  user-
              defined headers.

       hdr_order header1 header2 [ ... ]
              With  this  command, you can specify an order in which mutt will
              attempt to present headers to you when viewing messages.

       save-hook [!]pattern filename
              When a message matches  pattern,  the  default  file  name  when
              saving it will be the given filename.

       fcc-hook [!]pattern filename
              When  an outgoing message matches pattern, the default file name
              for storing a copy (fcc) will be the given filename.

       fcc-save-hook [!]pattern filename
              This command is an abbreviation for identical fcc-hook and save-
              hook commands.

       send-hook [!]pattern command
              When  composing a message matching pattern, command is executed.
              When multiple send-hooks match, they are executed in  the  order
              in which they occur in the configuration file.

       send2-hook [!]pattern command
              Whenever  a  message  matching  pattern  is  changed  (either by
              editing it or by using the compose menu), command  is  executed.
              When  multiple send2-hooks match, they are executed in the order
              in  which  they  occur  in  the  configuration  file.   Possible
              applications  include  setting  the  $sendmail  variable  when a
              message’s from header is changed.

              send2-hook execution is not triggered by  use  of  enter-command
              from the compose menu.

       reply-hook [!]pattern command
              When   replying  to  a  message  matching  pattern,  command  is
              executed.  When multiple reply-hooks match, they are executed in
              the order in which they occur in the configuration file, but all
              reply-hooks  are  matched  and   executed   before   send-hooks,
              regardless of their order in the configuration file.

       crypt-hook pattern key-id
              The  crypt-hook  command  provides  a  method  by  which you can
              specify the ID of the public key  to  be  used  when  encrypting
              messages  to a certain recipient.  The meaning of "key ID" is to
              be taken broadly: This can be  a  different  e-mail  address,  a
              numerical key ID, or even just an arbitrary search string.

       open-hook regexp "command"
       close-hook regexp "command"
       append-hook regexp "command"

              These  commands  provide a way to handle compressed folders. The
              given regexp specifies which folders  are  taken  as  compressed
              (e.g.   "\\.gz$").  The  commands  tell Mutt how to uncompress a
              folder (open-hook), compress a folder (close-hook) or  append  a
              compressed  mail  to  a  compressed  folder  (append-hook).  The
              command string is the  printf(3)  like  format  string,  and  it
              should  accept  two  parameters:  %f, which is replaced with the
              (compressed) folder name, and %t which is replaced with the name
              of the temporary folder to which to write.

       push string
              This command adds the named string to the keyboard buffer.

       set [no|inv|&|?]variable[=value] [ ... ]
       toggle variable [ ... ]
       unset variable [ ... ]
       reset variable [ ... ]

              These  commands  are  used  to  set and manipulate configuration
              variables.

              Mutt knows four  basic  types  of  variables:  boolean,  number,
              string  and  quadoption.   Boolean  variables can be set (true),
              unset (false), or toggled. Number variables can  be  assigned  a
              positive integer value.

              String  variables consist of any number of printable characters.
              Strings must be enclosed in quotes if  they  contain  spaces  or
              tabs.   You  may also use the “C” escape sequences \n and \t for
              newline and tab, respectively.

              Quadoption variables are used to control whether or  not  to  be
              prompted for certain actions, or to specify a default action.  A
              value  of  yes  will  cause  the  action  to  be   carried   out
              automatically  as  if  you  had  answered  yes  to the question.
              Similarly, a value of no will cause the the action to be carried
              out as if you had answered “no.” A value of ask-yes will cause a
              prompt with a default answer of “yes” and ask-no will provide  a
              default answer of “no.”

              The reset command resets all given variables to the compile time
              defaults.  If you reset the special variable all, all  variables
              will reset to their compile time defaults.

       source filename
              The given file will be evaluated as a configuration file.

       spam pattern format
              nospam pattern
              These commands define spam-detection patterns from external spam
              filters, so that mutt can sort,  limit,  and  search  on  ‘‘spam
              tags’’ or ‘‘spam attributes’’, or display them in the index. See
              the Mutt manual for details.

       unhook [ *  | hook-type ]
              This command will remove all hooks of a given type, or all hooks
              when  “*”  is  used as an argument.  hook-type can be any of the
              -hook commands documented above.

PATTERNS

       In various places with mutt, including some of the abovementioned  hook
       commands, you can specify patterns to match messages.

   Constructing Patterns
       A  simple  pattern  consists  of  an operator of the form “~character”,
       possibly followed by a parameter against  which  mutt  is  supposed  to
       match  the object specified by this operator.  For some characters, the
       ~ may be replaced by another character to alter  the  behavior  of  the
       match.  These are described in the list of operators, below.

       With  some  of  these  operators,  the object to be matched consists of
       several e-mail addresses.  In these cases, the object is matched if  at
       least  one  of  these  e-mail  addresses matches. You can prepend a hat
       (“^”) character to such a pattern to indicate that all  addresses  must
       match in order to match the object.

       You  can  construct  complex patterns by combining simple patterns with
       logical operators.  Logical AND is specified  by  simply  concatenating
       two  simple patterns, for instance “~C mutt-dev ~s bug”.  Logical OR is
       specified by inserting a vertical bar (“|”) between two  patterns,  for
       instance  “~C  mutt-dev  |  ~s  bug”.   Additionally,  you can negate a
       pattern by prepending a bang (“!”) character.   For  logical  grouping,
       use braces (“()”). Example: “!(~t mutt|~c mutt) ~f elkins”.

   Simple Patterns
       Mutt understands the following simple patterns:

       ~A          all messages
       ~b EXPR     messages which contain EXPR in the message body.
       =b STRING   messages  which contain STRING in the message body. If IMAP
                   is enabled, searches for STRING on the server, rather  than
                   downloading each message and searching it locally.
       ~B EXPR     messages which contain EXPR in the whole message.
       ~c EXPR     messages carbon-copied to EXPR
       %c GROUP    messages carbon-copied to any member of GROUP
       ~C EXPR     messages either to: or cc: EXPR
       %C GROUP    messages either to: or cc: to any member of GROUP
       ~d MIN-MAX  messages with “date-sent” in a Date range
       ~D          deleted messages
       ~e EXPR     messages which contain EXPR in the “Sender” field
       %e GROUP    messages  which  contain  a member of GROUP in the “Sender”
                   field
       ~E          expired messages
       ~f EXPR     messages originating from EXPR
       %f GROUP    messages originating form any member of GROUP
       ~F          flagged messages
       ~g          PGP signed messages
       ~G          PGP encrypted messages
       ~h EXPR     messages which contain EXPR in the message header
       ~H EXPR     messages with spam tags matching EXPR
       ~i EXPR     messages which match EXPR in the “Message-ID” field
       ~k          messages containing PGP key material
       ~l          messages addressed to a  known  mailing  list  (defined  by
                   either subscribe or list)
       ~L EXPR     messages either originated or received by EXPR
       %L GROUP    messages  either  originated  or  received by any member of
                   GROUP
       ~m MIN-MAX  message in the range MIN to MAX
       ~n MIN-MAX  messages with a score in the range MIN to MAX
       ~N          new messages
       ~O          old messages
       ~p          messages addressed to you (as defined by alternates)
       ~P          messages from you (as defined by alternates)
       ~Q          messages which have been replied to
       ~r MIN-MAX  messages with “date-received” in a Date range
       ~R          read messages
       ~s EXPR     messages having EXPR in the “Subject” field.
       ~S          superseded messages
       ~t EXPR     messages addressed to EXPR
       ~T          tagged messages
       ~u          messages addressed to a subscribed mailing list (defined by
                   subscribe commands)
       ~U          unread messages
       ~v          message is part of a collapsed thread.
       ~V          cryptographically verified messages
       ~x EXPR     messages  which  contain  EXPR  in the “References” or “In-
                   Reply-To” field
       ~X MIN-MAX  messages with MIN - MAX attachments
       ~y EXPR     messages which contain EXPR in the “X-Label” field
       ~z MIN-MAX  messages with a size in the range MIN to MAX
       ~=          duplicated messages (see $duplicate_threads)
       ~$          unreferenced message (requires threaded view)
       ~(PATTERN)  messages in threads containing messages matching a  certain
                   pattern,  e.g.  all  threads  containing messages from you:
                   ~(~P)

       In the above, EXPR is a regular expression.

       With the ~d, ~m, ~n, ~r, ~X, and ~z operators,  you  can  also  specify
       ranges in the forms <MAX, >MIN, MIN-, and -MAX.

       With  the  ~z operator, the suffixes “K” and “M” are allowed to specify
       kilobyte and megabyte respectively.

   Matching dates
       The ~d and ~r operators are  used  to  match  date  ranges,  which  are
       interpreted to be given in your local time zone.

       A  date  is  of  the  form DD[/MM[/[cc]YY]], that is, a two-digit date,
       optionally followed by a two-digit month, optionally followed by a year
       specifications.   Omitted fields default to the current month and year.

       Mutt understands either two or four digit  year  specifications.   When
       given  a  two-digit  year,  mutt  will interpret values less than 70 as
       lying in the 21st century (i.e., “38” means 2038 and not 1938, and “00”
       is  interpreted  as  2000),  and  values greater than or equal to 70 as
       lying in the 20th century.

       Note that this behaviour is Y2K compliant, but that mutt  does  have  a
       Y2.07K problem.

       If  a  date  range  consists of a single date, the operator in question
       will match that precise date.  If the date range  consists  of  a  dash
       (“-”), followed by a date, this range will match any date before and up
       to the date given.  Similarly, a date followed by a  dash  matches  the
       date  given  and  any  later  point of time.  Two dates, separated by a
       dash, match any date which lies in the given range of time.

       You can also modify any absolute date by giving  an  error  range.   An
       error  range  consists  of one of the characters +, -, *, followed by a
       positive number, followed by one of the unit characters y, m, w, or  d,
       specifying  a  unit  of years, months, weeks, or days.  + increases the
       maximum date matched by the given interval of  time,  -  decreases  the
       minimum date matched by the given interval of time, and * increases the
       maximum date and decreases  the  minimum  date  matched  by  the  given
       interval of time.  It is possible to give multiple error margins, which
       cumulate.  Example: 1/1/2001-1w+2w*3d

       You can also specify offsets relative to the current date.   An  offset
       is  specified  as one of the characters <, >, =, followed by a positive
       number, followed by one of the unit  characters  y,  m,  w,  or  d.   >
       matches  dates  which  are  older than the specified amount of time, an
       offset which begins with the character < matches dates which  are  more
       recent  than  the  specified amount of time, and an offset which begins
       with the character = matches points of time  which  are  precisely  the
       given amount of time ago.

CONFIGURATION VARIABLES

       abort_nosubject
              Type: quadoption
              Default: ask-yes

              If  set  to yes, when composing messages and no subject is given
              at the subject prompt, composition will be aborted.  If  set  to
              no,  composing  messages  with  no  subject given at the subject
              prompt will never be aborted.

       abort_unmodified
              Type: quadoption
              Default: yes

              If set  to  yes,  composition  will  automatically  abort  after
              editing  the  message  body  if  no changes are made to the file
              (this check only happens after the  first  edit  of  the  file).
              When set to no, composition will never be aborted.

       alias_file
              Type: path
              Default: “~/.muttrc”

              The  default  file  in  which  to  save  aliases  created by the
              <create-alias> function. Entries added to this file are  encoded
              in  the  character set specified by $config_charset if it is set
              or the current character set otherwise.

              Note: Mutt will not automatically source  this  file;  you  must
              explicitly  use  the  “source”  command for it to be executed in
              case this option points to a dedicated alias file.

              The default for this option is the currently used  muttrc  file,
              or “~/.muttrc” if no user muttrc was found.

       alias_format
              Type: string
              Default: “%4n %2f %t %-10a   %r”

              Specifies the format of the data displayed for the “alias” menu.
              The following printf(3)-style sequences are available:
              %a     alias name
              %f     flags - currently, a “d” for an alias marked for deletion
              %n     index number
              %r     address which alias expands to
              %t     character  which  indicates  if  the  alias is tagged for
                     inclusion

       allow_8bit
              Type: boolean
              Default: yes

              Controls whether 8-bit data is converted to 7-bit  using  either
              Quoted- Printable or Base64 encoding when sending mail.

       allow_ansi
              Type: boolean
              Default: no

              Controls whether ANSI color codes in messages (and color tags in
              rich text messages) are to be interpreted.  Messages  containing
              these codes are rare, but if this option is set, their text will
              be colored accordingly. Note that this may override  your  color
              choices,  and  even  present a security problem, since a message
              could include a line like

              [-- PGP output follows ...

              and give it the same color as your attachment  color  (see  also
              $crypt_timestamp).

       arrow_cursor
              Type: boolean
              Default: no

              When  set,  an arrow (“->”) will be used to indicate the current
              entry in menus instead of highlighting the whole line.  On  slow
              network  or  modem  links this will make response faster because
              there is less that has to be redrawn on the screen  when  moving
              to the next or previous entries in the menu.

       ascii_chars
              Type: boolean
              Default: no

              If  set,  Mutt  will  use plain ASCII characters when displaying
              thread  and  attachment  trees,  instead  of  the  default   ACS
              characters.

       askbcc
              Type: boolean
              Default: no

              If  set,  Mutt  will  prompt  you  for  blind-carbon-copy  (Bcc)
              recipients before editing an outgoing message.

       askcc
              Type: boolean
              Default: no

              If set, Mutt will prompt you  for  carbon-copy  (Cc)  recipients
              before editing the body of an outgoing message.

       assumed_charset
              Type: string
              Default: “”

              This  variable  is  a colon-separated list of character encoding
              schemes for  messages  without  character  encoding  indication.
              Header  field  values and message body content without character
              encoding indication would be assumed that they  are  written  in
              one of this list.  By default, all the header fields and message
              body without  any  charset  indication  are  assumed  to  be  in
              “us-ascii”.

              For example, Japanese users might prefer this:

              set assumed_charset=”iso-2022-jp:euc-jp:shift_jis:utf-8”

              However, only the first content is valid for the message body.

       attach_charset
              Type: string
              Default: “”

              This  variable  is  a colon-separated list of character encoding
              schemes for text file attachments. Mutt  uses  this  setting  to
              guess  which  encoding  files  being  attached are encoded in to
              convert them to a proper character set given in $send_charset.

              If unset, the value of  $charset  will  be  used  instead.   For
              example,  the  following  configuration  would work for Japanese
              text handling:

              set attach_charset=”iso-2022-jp:euc-jp:shift_jis:utf-8”

              Note: for Japanese users, “iso-2022-*” must be put at  the  head
              of the value as shown above if included.

       attach_format
              Type: string
              Default: “%u%D%I %t%4n %T%.40d%> [%.7m/%.10M, %.6e%?C?, %C?, %s] ”

              This  variable  describes  the  format of the “attachment” menu.
              The following printf(3)-style sequences are understood:
              %C     charset
              %c     requires charset conversion (“n” or “c”)
              %D     deleted flag
              %d     description
              %e     MIME content-transfer-encoding
              %f     filename
              %I     disposition (“I” for inline, “A” for attachment)
              %m     major MIME type
              %M     MIME subtype
              %n     attachment number
              %Q     “Q”, if MIME part qualifies for attachment counting
              %s     size
              %t     tagged flag
              %T     graphic tree characters
              %u     unlink (=to delete) flag
              %X     number of qualifying MIME parts  in  this  part  and  its
                     children   (please  see  the  “attachments”  section  for
                     possible speed effects)
              %>X    right justify  the  rest  of  the  string  and  pad  with
                     character “X”
              %|X    pad to the end of the line with character “X”
              %*X    soft-fill with character “X” as pad

              For   an  explanation  of  “soft-fill”,  see  the  $index_format
              documentation.

       attach_sep
              Type: string
              Default: “\n”

              The separator to add between attachments when operating (saving,
              printing, piping, etc) on a list of tagged attachments.

       attach_split
              Type: boolean
              Default: yes

              If  this  variable  is  unset, when operating (saving, printing,
              piping,  etc)  on  a  list  of  tagged  attachments,  Mutt  will
              concatenate the attachments and will operate on them as a single
              attachment.  The  $attach_sep  separator  is  added  after  each
              attachment.  When  set, Mutt will operate on the attachments one
              by one.

       attribution
              Type: string
              Default: “On %d, %n wrote:”

              This is the string that will precede a message  which  has  been
              included   in   a   reply.    For  a  full  listing  of  defined
              printf(3)-like sequences see the section on $index_format.

       auto_tag
              Type: boolean
              Default: no

              When set, functions in the index menu  which  affect  a  message
              will be applied to all tagged messages (if there are any).  When
              unset, you must first use the <tag-prefix>  function  (bound  to
              “;”  by  default)  to make the next function apply to all tagged
              messages.

       autoedit
              Type: boolean
              Default: no

              When set along with $edit_headers, Mutt will  skip  the  initial
              send-menu  (prompting  for subject and recipients) and allow you
              to immediately begin editing the  body  of  your  message.   The
              send-menu  may  still be accessed once you have finished editing
              the body of your message.

              Note: when this option is set, you cannot  use  send-hooks  that
              depend  on  the  recipients  when  composing  a  new (non-reply)
              message, as the initial list of recipients is empty.

              Also see $fast_reply.

       beep
              Type: boolean
              Default: yes

              When this variable is set, mutt will beep when an error  occurs.

       beep_new
              Type: boolean
              Default: no

              When  this  variable is set, mutt will beep whenever it prints a
              message notifying you of new mail.  This is independent  of  the
              setting of the $beep variable.

       bounce
              Type: quadoption
              Default: ask-yes

              Controls whether you will be asked to confirm bouncing messages.
              If set to yes you don’t get  asked  if  you  want  to  bounce  a
              message.  Setting  this  variable to no is not generally useful,
              and thus not recommended,  because  you  are  unable  to  bounce
              messages.

       bounce_delivered
              Type: boolean
              Default: yes

              When  this  variable  is  set,  mutt  will  include Delivered-To
              headers when bouncing messages.  Postfix users may wish to unset
              this variable.

              Note:  On  Debian  systems,  this  option is unset by default in
              /etc/Muttrc.

       braille_friendly
              Type: boolean
              Default: no

              When this variable is set, mutt will place  the  cursor  at  the
              beginning   of   the  current  line  in  menus,  even  when  the
              $arrow_cursor variable is unset,  making  it  easier  for  blind
              persons  using  Braille  displays  to  follow  these menus.  The
              option is unset by default because many visual  terminals  don’t
              permit making the cursor invisible.

       certificate_file
              Type: path
              Default: “~/.mutt_certificates”

              This  variable  specifies  the  file  where the certificates you
              trust are saved. When an unknown certificate is encountered, you
              are  asked  if  you  accept  it  or  not.  If you accept it, the
              certificate  can  also  be  saved  in  this  file  and   further
              connections are automatically accepted.

              You  can  also  manually  add  CA certificates in this file. Any
              server  certificate  that  is  signed  with  one  of  these   CA
              certificates is also automatically accepted.

              Example:

              set certificate_file=~/.mutt/certificates

       charset
              Type: string
              Default: “”

              Character  set  your  terminal uses to display and enter textual
              data.  It is also the fallback for $send_charset.

              Upon startup Mutt tries to derive this  value  from  environment
              variables such as $LC_CTYPE or $LANG.

              Note:  It  should  only  be  set  in  case  Mutt  isn’t abled to
              determine the character set used correctly.

       check_mbox_size
              Type: boolean
              Default: no

              When this variable is set, mutt will  use  file  size  attribute
              instead  of  access  time when checking for new mail in mbox and
              mmdf folders.

              This variable is unset by default and  should  only  be  enabled
              when  new mail detection for these folder types is unreliable or
              doesn’t work.

              Note that  enabling  this  variable  should  happen  before  any
              “mailboxes”  directives  occur  in configuration files regarding
              mbox or mmdf folders because mutt needs to determine the initial
              new  mail  status of such a mailbox by performing a fast mailbox
              scan when it is defined.  Afterwards  the  new  mail  status  is
              tracked by file size changes.

       check_new
              Type: boolean
              Default: yes

              Note: this option only affects maildir and MH style mailboxes.

              When  set,  Mutt  will  check  for  new mail delivered while the
              mailbox is open.  Especially with MH mailboxes,  this  operation
              can  take  quite  some  time  since  it  involves  scanning  the
              directory and checking each file to see if it has  already  been
              looked  at.  If this variable is unset, no check for new mail is
              performed while the mailbox is open.

       collapse_unread
              Type: boolean
              Default: yes

              When unset, Mutt will not collapse a thread if it  contains  any
              unread messages.

       compose_format
              Type: string
              Default: “-- Mutt: Compose  [Approx. msg size: %l   Atts: %a]%>-”

              Controls  the  format  of  the  status  line  displayed  in  the
              “compose” menu.  This string is similar to  $status_format,  but
              has its own set of printf(3)-like sequences:
              %a     total number of attachments
              %h     local hostname
              %l     approximate size (in bytes) of the current message
              %v     Mutt version string

              See  the  text  describing  the  $status_format  option for more
              information on how to set $compose_format.

       config_charset
              Type: string
              Default: “”

              When defined, Mutt will recode commands in rc  files  from  this
              encoding  to  the current character set as specified by $charset
              and aliases written to $alias_file from  the  current  character
              set.

              Please  note  that  if  setting  $charset it must be done before
              setting $config_charset.

              Recoding should  be  avoided  as  it  may  render  unconvertable
              characters  as  question  marks which can lead to undesired side
              effects (for example in regular expressions).

       confirmappend
              Type: boolean
              Default: yes

              When set, Mutt  will  prompt  for  confirmation  when  appending
              messages to an existing mailbox.

       confirmcreate
              Type: boolean
              Default: yes

              When set, Mutt will prompt for confirmation when saving messages
              to a mailbox which does not yet exist before creating it.

       connect_timeout
              Type: number
              Default: 30

              Causes Mutt to timeout a network connection (for  IMAP,  POP  or
              SMTP)  after  this many seconds if the connection is not able to
              be  established.   A  negative  value  causes   Mutt   to   wait
              indefinitely for the connection attempt to succeed.

       content_type
              Type: string
              Default: “text/plain”

              Sets  the  default  Content-Type  for the body of newly composed
              messages.

       copy
              Type: quadoption
              Default: yes

              This variable controls whether or not copies  of  your  outgoing
              messages  will be saved for later references.  Also see $record,
              $save_name, $force_name and “fcc-hook”.

       crypt_autoencrypt
              Type: boolean
              Default: no

              Setting this variable will cause Mutt to always attempt  to  PGP
              encrypt  outgoing  messages.   This  is  probably only useful in
              connection to the “send-hook” command.  It can be overridden  by
              use  of the pgp menu, when encryption is not required or signing
              is requested as well.  If $smime_is_default is set, then OpenSSL
              is  used  instead  to create S/MIME messages and settings can be
              overridden by use of the smime menu instead.  (Crypto only)

       crypt_autopgp
              Type: boolean
              Default: yes

              This variable controls whether or  not  mutt  may  automatically
              enable   PGP   encryption/signing   for   messages.    See  also
              $crypt_autoencrypt,    $crypt_replyencrypt,     $crypt_autosign,
              $crypt_replysign and $smime_is_default.

       crypt_autosign
              Type: boolean
              Default: no

              Setting  this  variable  will  cause  Mutt  to always attempt to
              cryptographically  sign  outgoing   messages.    This   can   be
              overridden  by use of the pgp menu, when signing is not required
              or encryption is requested as well. If $smime_is_default is set,
              then  OpenSSL  is  used  instead  to  create S/MIME messages and
              settings can be overridden by use of the smime menu  instead  of
              the pgp menu.  (Crypto only)

       crypt_autosmime
              Type: boolean
              Default: yes

              This  variable  controls  whether  or not mutt may automatically
              enable  S/MIME  encryption/signing  for   messages.   See   also
              $crypt_autoencrypt,     $crypt_replyencrypt,    $crypt_autosign,
              $crypt_replysign and $smime_is_default.

       crypt_replyencrypt
              Type: boolean
              Default: yes

              If set, automatically PGP or OpenSSL encrypt replies to messages
              which are encrypted.  (Crypto only)

       crypt_replysign
              Type: boolean
              Default: no

              If  set,  automatically  PGP or OpenSSL sign replies to messages
              which are signed.

              Note: this does not work on  messages  that  are  encrypted  and
              signed!  (Crypto only)

       crypt_replysignencrypted
              Type: boolean
              Default: no

              If  set,  automatically  PGP or OpenSSL sign replies to messages
              which are  encrypted.  This  makes  sense  in  combination  with
              $crypt_replyencrypt,  because it allows you to sign all messages
              which  are  automatically  encrypted.   This  works  around  the
              problem noted in $crypt_replysign, that mutt is not able to find
              out whether an encrypted message is also signed.  (Crypto only)

       crypt_timestamp
              Type: boolean
              Default: yes

              If set, mutt will include a time stamp in the lines  surrounding
              PGP  or S/MIME output, so spoofing such lines is more difficult.
              If you are using colors to mark these lines, and rely on  these,
              you may unset this setting.  (Crypto only)

       crypt_use_gpgme
              Type: boolean
              Default: no

              This  variable  controls  the  use  of  the GPGME-enabled crypto
              backends.  If it is set and Mutt was built with  gpgme  support,
              the  gpgme  code  for S/MIME and PGP will be used instead of the
              classic code.  Note that you need to set this option in .muttrc;
              it won’t have any effect when used interactively.

       crypt_use_pka
              Type: boolean
              Default: no

              Controls       whether       mutt       uses       PKA      (see
              http://www.g10code.de/docs/pka-intro.de.pdf)  during   signature
              verification (only supported by the GPGME backend).

       crypt_verify_sig
              Type: quadoption
              Default: yes

              If yes, always attempt to verify PGP or S/MIME signatures.  If
              ask-*, ask  whether  or  not  to  verify  the  signature.   If
              \Fi“no”,  never  attempt  to  verify  cryptographic  signatures.
              (Crypto only)

       date_format
              Type: string
              Default: “!%a, %b %d, %Y at %I:%M:%S%p %Z”

              This variable controls the format of the  date  printed  by  the
              “%d”   sequence   in  $index_format.   This  is  passed  to  the
              strftime(3) function to process the date, see the man  page  for
              the proper syntax.

              Unless  the  first  character in the string is a bang (“!”), the
              month and week day names are expanded according  to  the  locale
              specified in the variable $locale. If the first character in the
              string is a bang, the bang is discarded, and the month and  week
              day names in the rest of the string are expanded in the C locale
              (that is in US English).

       default_hook
              Type: string
              Default: “~f %s !~P | (~P ~C %s)”

              This variable controls how “message-hook”, “reply-hook”,  “send-
              hook”,   “send2-hook”,   “save-hook”,  and  “fcc-hook”  will  be
              interpreted if they are specified with  only  a  simple  regexp,
              instead of a matching pattern.  The hooks are expanded when they
              are declared, so a hook will be  interpreted  according  to  the
              value of this variable at the time the hook is declared.

              The  default  value matches if the message is either from a user
              matching the regular expression given, or if it is from you  (if
              the  from  address matches “alternates”) and is to or cc’ed to a
              user matching the given regular expression.

       delete
              Type: quadoption
              Default: ask-yes

              Controls whether or not messages are really deleted when closing
              or  synchronizing a mailbox.  If set to yes, messages marked for
              deleting will automatically be purged without prompting.  If set
              to no, messages marked for deletion will be kept in the mailbox.

       delete_untag
              Type: boolean
              Default: yes

              If this option is set, mutt will  untag  messages  when  marking
              them  for  deletion.   This  applies  when you either explicitly
              delete a message, or when you save it to another folder.

       digest_collapse
              Type: boolean
              Default: yes

              If this option is set, mutt’s received-attachments menu will not
              show  the subparts of individual messages in a multipart/digest.
              To see these subparts, press “v” on that menu.

       display_filter
              Type: path
              Default: “”

              When set, specifies a command used to filter messages.   When  a
              message   is   viewed   it   is  passed  as  standard  input  to
              $display_filter, and the  filtered  message  is  read  from  the
              standard output.

       dotlock_program
              Type: path
              Default: “/usr/bin/mutt_dotlock”

              Contains  the  path  of the mutt_dotlock(8) binary to be used by
              mutt.

       dsn_notify
              Type: string
              Default: “”

              This  variable  sets  the  request  for  when  notification   is
              returned.   The  string  consists  of a comma separated list (no
              spaces!) of one or  more  of  the  following:  never,  to  never
              request   notification,  failure,  to  request  notification  on
              transmission failure, delay, to be notified of  message  delays,
              success, to be notified of successful transmission.

              Example:

              set dsn_notify=”failure,delay”

              Note:  when  using $sendmail for delivery, you should not enable
              this unless you are either using Sendmail 8.8.x or greater or  a
              MTA  providing a sendmail(1)-compatible interface supporting the
              -N  option  for  DSN.  For  SMTP  delivery,   DSN   support   is
              autodetected  so  that it depends on the server whether DSN will
              be used or not.

       dsn_return
              Type: string
              Default: “”

              This variable controls how much of your message is  returned  in
              DSN  messages.   It may be set to either hdrs to return just the
              message header, or full to return the full message.

              Example:

              set dsn_return=hdrs

              Note: when using $sendmail for delivery, you should  not  enable
              this  unless you are either using Sendmail 8.8.x or greater or a
              MTA providing a sendmail(1)-compatible interface supporting  the
              -R   option   for   DSN.  For  SMTP  delivery,  DSN  support  is
              autodetected so that it depends on the server whether  DSN  will
              be used or not.

       duplicate_threads
              Type: boolean
              Default: yes

              This  variable  controls  whether  mutt,  when  $sort  is set to
              threads, threads messages with the same Message-Id together.  If
              it  is  set, it will indicate that it thinks they are duplicates
              of each other with an equals sign in the thread tree.

       edit_headers
              Type: boolean
              Default: no

              This option allows you to  edit  the  header  of  your  outgoing
              messages along with the body of your message.

              Note  that changes made to the References: and Date: headers are
              ignored for interoperability reasons.

       editor
              Type: path
              Default: “”

              This variable specifies  which  editor  is  used  by  mutt.   It
              defaults  to  the  value of the $VISUAL, or $EDITOR, environment
              variable, or to the string “/usr/bin/editor” if neither of those
              are set.

       encode_from
              Type: boolean
              Default: no

              When  set,  mutt will quoted-printable encode messages when they
              contain the string “From ” (note  the  trailing  space)  in  the
              beginning  of  a  line.   This  is useful to avoid the tampering
              certain mail delivery and  transport  agents  tend  to  do  with
              messages  (in  order  to  prevent tools from misinterpreting the
              line as a mbox message separator).

       envelope_from_address
              Type: e-mail address
              Default: “”

              Manually sets the envelope sender for outgoing  messages.   This
              value is ignored if $use_envelope_from is unset.

       escape
              Type: string
              Default: “~”

              Escape character to use for functions in the builtin editor.

       fast_reply
              Type: boolean
              Default: no

              When  set,  the  initial  prompt  for recipients and subject are
              skipped when replying to messages, and the  initial  prompt  for
              subject is skipped when forwarding messages.

              Note: this variable has no effect when the $autoedit variable is
              set.

       fcc_attach
              Type: quadoption
              Default: yes

              This variable controls whether or not  attachments  on  outgoing
              messages are saved along with the main body of your message.

       fcc_clear
              Type: boolean
              Default: no

              When  this  variable is set, FCCs will be stored unencrypted and
              unsigned, even when  the  actual  message  is  encrypted  and/or
              signed.  (PGP only)

       folder
              Type: path
              Default: “~/Mail”

              Specifies  the default location of your mailboxes.  A “+” or “=”
              at the beginning of a pathname will be expanded to the value  of
              this  variable.  Note that if you change this variable (from the
              default) value you need to make sure that the assignment  occurs
              before  you  use  “+”  or  “=”  for  any  other  variables since
              expansion takes place when handling the “mailboxes” command.

       folder_format
              Type: string
              Default: “%2C %t %N %F %2l %-8.8u %-8.8g %8s %d %f”

              This variable allows you to customize the file  browser  display
              to   your   personal   taste.    This   string   is  similar  to
              $index_format, but has its own set of printf(3)-like sequences:
              %C     current file number
              %d     date/time folder was last modified
              %f     filename (“/” is appended  to  directory  names,  “@”  to
                     symbolic links and “*” to executable files)
              %F     file permissions
              %g     group name (or numeric gid, if missing)
              %l     number of hard links
              %N     N if folder has new mail, blank otherwise
              %s     size in bytes
              %t     “*” if the file is tagged, blank otherwise
              %u     owner name (or numeric uid, if missing)
              %>X    right  justify  the  rest  of  the  string  and  pad with
                     character “X”
              %|X    pad to the end of the line with character “X”
              %*X    soft-fill with character “X” as pad

              For  an  explanation  of  “soft-fill”,  see  the   $index_format
              documentation.

       followup_to
              Type: boolean
              Default: yes

              Controls  whether or not the “Mail-Followup-To:” header field is
              generated when sending mail.  When set, Mutt will generate  this
              field  when  you are replying to a known mailing list, specified
              with the “subscribe” or “lists” commands.

              This  field  has  two  purposes.   First,  preventing  you  from
              receiving duplicate copies of replies to messages which you send
              to mailing lists, and second, ensuring that you do get  a  reply
              separately for any messages sent to known lists to which you are
              not subscribed.

              The header will contain only the list’s address  for  subscribed
              lists,  and both the list address and your own email address for
              unsubscribed lists.  Without this header, a group reply to  your
              message  sent to a subscribed list will be sent to both the list
              and your address, resulting in two copies of the same email  for
              you.

       force_name
              Type: boolean
              Default: no

              This  variable  is  similar to $save_name, except that Mutt will
              store a copy of your outgoing message by  the  username  of  the
              address  you are sending to even if that mailbox does not exist.

              Also see the $record variable.

       forward_decode
              Type: boolean
              Default: yes

              Controls the decoding of complex MIME messages  into  text/plain
              when  forwarding  a message.  The message header is also RFC2047
              decoded.  This variable is only used, if $mime_forward is unset,
              otherwise $mime_forward_decode is used instead.

       forward_decrypt
              Type: boolean
              Default: yes

              Controls  the  handling  of encrypted messages when forwarding a
              message.  When set, the outer layer of  encryption  is  stripped
              off.   This  variable  is  only used if $mime_forward is set and
              $mime_forward_decode is unset.  (PGP only)

       forward_edit
              Type: quadoption
              Default: yes

              This  quadoption  controls  whether   or   not   the   user   is
              automatically  placed  in  the  editor when forwarding messages.
              For those who always want to forward with no modification, use a
              setting of “no”.

       forward_format
              Type: string
              Default: “[%a: %s]”

              This  variable  controls  the  default subject when forwarding a
              message.  It uses the same format sequences as the $index_format
              variable.

       forward_quote
              Type: boolean
              Default: no

              When  set,  forwarded  messages included in the main body of the
              message (when $mime_forward  is  unset)  will  be  quoted  using
              $indent_string.

       from
              Type: e-mail address
              Default: “”

              When set, this variable contains a default from address.  It can
              be overridden using “my_hdr” (including from a “send-hook”)  and
              $reverse_name.   This variable is ignored if $use_from is unset.

              This  setting  defaults  to  the  contents  of  the  environment
              variable $EMAIL.

       gecos_mask
              Type: regular expression
              Default: “^[^,]*”

              A  regular expression used by mutt to parse the GECOS field of a
              password entry when expanding the alias.  The default value will
              return the string up to the first “,” encountered.  If the GECOS
              field contains a string  like  “lastname,  firstname”  then  you
              should set it to “.*”.

              This  can  be  useful  if  you  see  the following behavior: you
              address an e-mail to user ID “stevef” whose full name is  “Steve
              Franklin”.     If   mutt   expands   “stevef”   to   “”Franklin”
              stevef@foo.bar” then you should set the $gecos_mask to a regular
              expression  that  will  match the whole name so mutt will expand
              “Franklin” to “Franklin, Steve”.

       hdrs
              Type: boolean
              Default: yes

              When unset, the header fields normally  added  by  the  “my_hdr”
              command  are  not  created.   This variable must be unset before
              composing a new message or replying in order to take effect.  If
              set,  the  user  defined  header  fields  are added to every new
              message.

       header
              Type: boolean
              Default: no

              When set, this variable causes Mutt to include the header of the
              message  you  are  replying  to into the edit buffer.  The $weed
              setting applies.

       header_cache
              Type: path
              Default: “”

              This variable points to the header cache database.  If  pointing
              to  a  directory  Mutt will contain a header cache database file
              per folder, if pointing to a file that file  will  be  a  single
              global header cache. By default it is unset so no header caching
              will be used.

              Header caching can greatly improve speed when opening POP,  IMAP
              MH or Maildir folders, see “caching” for details.

       header_cache_pagesize
              Type: string
              Default: “16384”

              When  mutt  is  compiled  with either gdbm or bdb4 as the header
              cache backend, this option changes the database page size.   Too
              large  or too small values can waste space, memory, or CPU time.
              The default should be more or less optimal for most use cases.

       help
              Type: boolean
              Default: yes

              When set, help lines  describing  the  bindings  for  the  major
              functions  provided by each menu are displayed on the first line
              of the screen.

              Note: The  binding  will  not  be  displayed  correctly  if  the
              function  is bound to a sequence rather than a single keystroke.
              Also, the help line may not be updated if a binding  is  changed
              while  Mutt  is running.  Since this variable is primarily aimed
              at new users, neither of these should present a major problem.

       hidden_host
              Type: boolean
              Default: no

              When set, mutt  will  skip  the  host  name  part  of  $hostname
              variable  when  adding  the  domain  part  to  addresses.   This
              variable does not affect the generation of Message-IDs,  and  it
              will not lead to the cut-off of first-level domains.

       hide_limited
              Type: boolean
              Default: no

              When  set,  mutt will not show the presence of messages that are
              hidden by limiting, in the thread tree.

       hide_missing
              Type: boolean
              Default: yes

              When set, mutt will not show the presence of missing messages in
              the thread tree.

       hide_thread_subject
              Type: boolean
              Default: yes

              When  set,  mutt  will  not  show the subject of messages in the
              thread tree that have  the  same  subject  as  their  parent  or
              closest previously displayed sibling.

       hide_top_limited
              Type: boolean
              Default: no

              When  set,  mutt will not show the presence of messages that are
              hidden by limiting, at the top of threads in  the  thread  tree.
              Note  that  when  $hide_limited is set, this option will have no
              effect.

       hide_top_missing
              Type: boolean
              Default: yes

              When set, mutt will not show the presence of missing messages at
              the  top  of  threads  in  the  thread  tree.   Note  that  when
              $hide_missing is set, this option will have no effect.

       history
              Type: number
              Default: 10

              This  variable  controls  the  size  (in   number   of   strings
              remembered)  of  the  string  history  buffer  per category. The
              buffer is cleared each time the variable is set.

       history_file
              Type: path
              Default: “~/.mutthistory”

              The file in which Mutt will save its history.

       honor_disposition
              Type: boolean
              Default: no

              When set, Mutt will not display attachments with  a  disposition
              of “attachment” inline even if it could render the part to plain
              text. These MIME parts can only be viewed  from  the  attachment
              menu.

              If  unset,  Mutt  will  render  all  MIME  parts it can properly
              transform to plain text.

       honor_followup_to
              Type: quadoption
              Default: yes

              This variable controls whether or not a Mail-Followup-To  header
              is honored when group-replying to a message.

       hostname
              Type: string
              Default: “”

              Specifies  the  fully-qualified  hostname  of the system mutt is
              running on containing the host’s name  and  the  DNS  domain  it
              belongs  to. It is used as the domain part (after “@”) for local
              email addresses as well as Message-Id headers.

              Its value is determined at startup as  follows:  If  the  node’s
              name  as returned by the uname(3) function contains the hostname
              and the domain, these are used to construct $hostname. If  there
              is  no  domain  part  returned, Mutt will look for a “domain” or
              “search” line  in  /etc/resolv.conf  to  determine  the  domain.
              Optionally,  Mutt  can  be  compiled with a fixed domain name in
              which case a detected one is not used.

              Also see $use_domain and $hidden_host.

              Note: On Debian  systems,  the  default  for  this  variable  is
              obtained from /etc/mailname when Mutt starts.

       ignore_linear_white_space
              Type: boolean
              Default: no

              This option replaces linear-white-space between encoded-word and
              text to a single space to prevent the  display  of  MIME-encoded
              “Subject:” field from being divided into multiple lines.

       ignore_list_reply_to
              Type: boolean
              Default: no

              Affects  the  behaviour of the <reply> function when replying to
              messages from mailing lists (as defined by  the  “subscribe”  or
              “lists” commands).  When set, if the “Reply-To:” field is set to
              the same value  as  the  “To:”  field,  Mutt  assumes  that  the
              “Reply-To:”  field  was  set  by  the  mailing  list to automate
              responses to the list, and will ignore this field.  To direct  a
              response  to  the  mailing list when this option is set, use the
              <list-reply> function; <group-reply>  will  reply  to  both  the
              sender and the list.

       imap_authenticators
              Type: string
              Default: “”

              This  is  a  colon-delimited list of authentication methods mutt
              may attempt to use to log in to an IMAP  server,  in  the  order
              mutt should try them.  Authentication methods are either “login”
              or the right side of an IMAP “AUTH=xxx”  capability  string,  eg
              “digest-md5”,   “gssapi”   or   “cram-md5”.   This   option   is
              case-insensitive. If it’s unset (the default) mutt will try  all
              available methods, in order from most-secure to least-secure.

              Example:

              set imap_authenticators=”gssapi:cram-md5:login”

              Note:  Mutt  will only fall back to other authentication methods
              if  the  previous  methods  are  unavailable.  If  a  method  is
              available but authentication fails, mutt will not connect to the
              IMAP server.

       imap_check_subscribed
              Type: boolean
              Default: no

              When set, mutt will fetch the set  of  subscribed  folders  from
              your  server on connection, and add them to the set of mailboxes
              it polls for new mail just  as  if  you  had  issued  individual
              “mailboxes” commands.

       imap_delim_chars
              Type: string
              Default: “/.”

              This  contains  the  list  of characters which you would like to
              treat  as  folder  separators  for  displaying  IMAP  paths.  In
              particular  it  helps  in using the “=” shortcut for your folder
              variable.

       imap_headers
              Type: string
              Default: “”

              Mutt requests these header fields in  addition  to  the  default
              headers    (“Date:”,    “From:”,   “Subject:”,   “To:”,   “Cc:”,
              “Message-Id:”,          “References:”,          “Content-Type:”,
              “Content-Description:”,  “In-Reply-To:”,  “Reply-To:”, “Lines:”,
              “List-Post:”, “X-Label:”) from IMAP  servers  before  displaying
              the  index  menu.  You  may  want  to  add more headers for spam
              detection.

              Note: This is a space separated list, items should be  uppercase
              and  not  contain the colon, e.g. “X-BOGOSITY X-SPAM-STATUS” for
              the “X-Bogosity:” and “X-Spam-Status:” header fields.

       imap_idle
              Type: boolean
              Default: no

              When set, mutt will attempt to use the IMAP  IDLE  extension  to
              check for new mail in the current mailbox. Some servers (dovecot
              was the inspiration for  this  option)  react  badly  to  mutt’s
              implementation.   If   your   connection   seems  to  freeze  up
              periodically, try unsetting this.

       imap_keepalive
              Type: number
              Default: 900

              This variable specifies the maximum amount of  time  in  seconds
              that  mutt  will  wait  before polling open IMAP connections, to
              prevent the server from closing them before  mutt  has  finished
              with  them. The default is well within the RFC-specified minimum
              amount of time (30 minutes) before a server  is  allowed  to  do
              this,  but  in  practice the RFC does get violated every now and
              then.  Reduce  this  number  if  you   find   yourself   getting
              disconnected from your IMAP server due to inactivity.

       imap_list_subscribed
              Type: boolean
              Default: no

              This  variable configures whether IMAP folder browsing will look
              for only subscribed folders or all folders.  This can be toggled
              in the IMAP browser with the <toggle-subscribed> function.

       imap_login
              Type: string
              Default: “”

              Your login name on the IMAP server.

              This variable defaults to the value of $imap_user.

       imap_pass
              Type: string
              Default: “”

              Specifies  the  password  for your IMAP account.  If unset, Mutt
              will  prompt  you  for  your  password  when  you   invoke   the
              <imap-fetch-mail> function or try to open an IMAP folder.

              Warning:  you  should  only  use  this  option when you are on a
              fairly secure machine,  because  the  superuser  can  read  your
              muttrc even if you are the only one who can read the file.

       imap_passive
              Type: boolean
              Default: yes

              When  set,  mutt will not open new IMAP connections to check for
              new mail.  Mutt will only check for new mail over existing  IMAP
              connections.  This is useful if you don’t want to be prompted to
              user/password pairs  on  mutt  invocation,  or  if  opening  the
              connection is slow.

       imap_peek
              Type: boolean
              Default: yes

              When  set,  mutt will avoid implicitly marking your mail as read
              whenever you fetch a message from the server. This is  generally
              a  good  thing,  but  can  make  closing an IMAP folder somewhat
              slower. This option exists to appease speed freaks.

       imap_pipeline_depth
              Type: number
              Default: 15

              Controls the number of IMAP  commands  that  may  be  queued  up
              before  they  are  sent to the server. A deeper pipeline reduces
              the amount of time mutt must wait for the server, and  can  make
              IMAP  servers  feel  much  more  responsive. But not all servers
              correctly handle pipelined commands, so if you have problems you
              might want to try setting this variable to 0.

              Note:   Changes   to  this  variable  have  no  effect  on  open
              connections.

       imap_servernoise
              Type: boolean
              Default: yes

              When set, mutt will  display  warning  messages  from  the  IMAP
              server  as  error  messages.  Since  these  messages  are  often
              harmless, or generated due  to  configuration  problems  on  the
              server  which  are  out  of  the  users’  hands, you may wish to
              suppress them at some point.

       imap_user
              Type: string
              Default: “”

              The name of the user whose mail you intend to access on the IMAP
              server.

              This variable defaults to your user name on the local machine.

       implicit_autoview
              Type: boolean
              Default: no

              If  set  to  “yes”,  mutt will look for a mailcap entry with the
              “copiousoutput” flag set for every MIME  attachment  it  doesn’t
              have an internal viewer defined for.  If such an entry is found,
              mutt will use the viewer defined in that entry  to  convert  the
              body part to text form.

       include
              Type: quadoption
              Default: ask-yes

              Controls  whether  or  not  a  copy  of  the  message(s) you are
              replying to is included in your reply.

       include_onlyfirst
              Type: boolean
              Default: no

              Controls whether or not Mutt includes only the first  attachment
              of the message you are replying.

       indent_string
              Type: string
              Default: “> ”

              Specifies the string to prepend to each line of text quoted in a
              message to which you are replying.  You are strongly  encouraged
              not  to  change  this  value,  as  it  tends to agitate the more
              fanatical netizens.

              The value of this option is ignored if $text_flowed is set,  too
              because   the   quoting   mechanism   is  strictly  defined  for
              format=flowed.

              This option is a format string, please see  the  description  of
              $index_format for supported printf(3)-style sequences.

       index_format
              Type: string
              Default: “%4C %Z %{%b %d} %-15.15L (%?l?%4l&%4c?) %s”

              This  variable allows you to customize the message index display
              to your personal taste.

              “Format strings” are similar  to  the  strings  used  in  the  C
              function  printf(3)  to format output (see the man page for more
              details).  The following sequences are defined in Mutt:
              %a     address of the author
              %A     reply-to  address  (if  present;  otherwise:  address  of
                     author)
              %b     filename of the original message folder (think mailbox)
              %B     the list to which the letter was sent, or else the folder
                     name (%b).
              %c     number of characters (bytes) in the message
              %C     current message number
              %d     date and time of the message in the format  specified  by
                     $date_format converted to sender’s time zone
              %D     date  and  time of the message in the format specified by
                     $date_format converted to the local time zone
              %e     current message number in thread
              %E     number of messages in current thread
              %f     sender  (address  +   real   name),   either   From:   or
                     Return-Path:
              %F     author name, or recipient name if the message is from you
              %H     spam attribute(s) of this message
              %i     message-id of the current message
              %l     number of lines  in  the  message  (does  not  work  with
                     maildir, mh, and possibly IMAP folders)
              %L     If  an address in the “To:” or “Cc:” header field matches
                     an address defined by the users “subscribe” command, this
                     displays ”To <list-name>”, otherwise the same as %F.
              %m     total number of message in the mailbox
              %M     number of hidden messages if the thread is collapsed.
              %N     message score
              %n     author’s real name (or address if missing)
              %O     original  save  folder  where  mutt  would  formerly have
                     stashed the message: list name or recipient name  if  not
                     sent to a list
              %P     progress indicator for the builtin pager (how much of the
                     file has been displayed)
              %s     subject of the message
              %S     status of the message (“N”/“D”/“d”/“!”/“r”/*)
              %t     “To:” field (recipients)
              %T     the appropriate character from the $to_chars string
              %u     user (login) name of the author
              %v     first name of the author, or the recipient if the message
                     is from you
              %X     number  of  attachments  (please  see  the  “attachments”
                     section for possible speed effects)
              %y     “X-Label:” field, if present
              %Y     “X-Label:” field, if present, and (1) not at  part  of  a
                     thread  tree,  (2)  at  the  top  of  a  thread,  or  (3)
                     “X-Label:”  is   different   from   preceding   message’s
                     “X-Label:”.
              %Z     message status flags
              %{fmt} the date and time of the message is converted to sender’s
                     time zone, and “fmt” is expanded by the library  function
                     strftime(3); a leading bang disables locales
              %[fmt] the  date  and  time  of  the message is converted to the
                     local time zone, and “fmt” is  expanded  by  the  library
                     function strftime(3); a leading bang disables locales
              %(fmt) the  local  date  and time when the message was received.
                     “fmt” is expanded by the library function strftime(3);  a
                     leading bang disables locales
              %<fmt> the  current local time. “fmt” is expanded by the library
                     function strftime(3); a leading bang disables locales.
              %>X    right justify  the  rest  of  the  string  and  pad  with
                     character “X”
              %|X    pad to the end of the line with character “X”
              %*X    soft-fill with character “X” as pad

              “Soft-fill”      deserves      some      explanation:     Normal
              right-justification will print everything to  the  left  of  the
              “%>”,  displaying padding and whatever lies to the right only if
              there’s room. By  contrast,  soft-fill  gives  priority  to  the
              right-hand  side,  guaranteeing  space to display it and showing
              padding only if there’s still room. If necessary, soft-fill will
              eat text leftwards to make room for rightward text.

              Note  that  these  expandos  are supported in “save-hook”, “fcc-
              hook” and “fcc-save-hook”, too.

       ispell
              Type: path
              Default: “ispell”

              How to invoke ispell (GNU’s spell-checking software).

       keep_flagged
              Type: boolean
              Default: no

              If set, read messages marked as flagged will not be  moved  from
              your  spool  mailbox  to your $mbox mailbox, or as a result of a
              “mbox-hook” command.

       locale
              Type: string
              Default: “C”

              The locale used by strftime(3) to format dates. Legal values are
              the  strings  your  system  accepts  for  the locale environment
              variable $LC_TIME.

       mail_check
              Type: number
              Default: 5

              This variable configures how often (in seconds) mutt should look
              for new mail. Also see the $timeout variable.

       mailcap_path
              Type: string
              Default: “”

              This  variable  specifies which files to consult when attempting
              to display MIME bodies not directly supported by Mutt.

       mailcap_sanitize
              Type: boolean
              Default: yes

              If set, mutt will restrict  possible  characters  in  mailcap  %
              expandos  to a well-defined set of safe characters.  This is the
              safe setting, but we are not sure it  doesn’t  break  some  more
              advanced MIME stuff.

              DONT  CHANGE  THIS  SETTING UNLESS YOU ARE REALLY SURE WHAT YOU
              ARE DOING!

       maildir_header_cache_verify
              Type: boolean
              Default: yes

              Check for  Maildir  unaware  programs  other  than  mutt  having
              modified  maildir  files  when the header cache is in use.  This
              incurs one stat(2) per message every time the folder  is  opened
              (which can be very slow for NFS folders).

       maildir_trash
              Type: boolean
              Default: no

              If  set,  messages  marked  as  deleted  will  be saved with the
              maildir trashed flag  instead  of  unlinked.   Note:  this  only
              applies  to  maildir-style  mailboxes.   Setting it will have no
              effect on other mailbox types.

       mark_old
              Type: boolean
              Default: yes

              Controls whether or not mutt marks new unread messages as old if
              you  exit a mailbox without reading them.  With this option set,
              the next time you start mutt, the messages will show up with  an
              “O”  next  to  them  in the index menu, indicating that they are
              old.

       markers
              Type: boolean
              Default: yes

              Controls the display of wrapped lines in the internal pager.  If
              set,  a  “+”  marker  is  displayed  at the beginning of wrapped
              lines.

              Also see the $smart_wrap variable.

       mask
              Type: regular expression
              Default: “!^\.[^.]”

              A regular  expression  used  in  the  file  browser,  optionally
              preceded  by the not operator “!”.  Only files whose names match
              this mask will be shown. The match is always case-sensitive.

       mbox
              Type: path
              Default: “~/mbox”

              This  specifies  the  folder  into  which  read  mail  in   your
              $spoolfile folder will be appended.

              Also see the $move variable.

       mbox_type
              Type: folder magic
              Default: mbox

              The  default mailbox type used when creating new folders. May be
              any of “mbox”, “MMDF”, “MH” and “Maildir”. This is overriden  by
              the -m command-line option.

       menu_context
              Type: number
              Default: 0

              This  variable  controls the number of lines of context that are
              given when scrolling through menus. (Similar to $pager_context.)

       menu_move_off
              Type: boolean
              Default: yes

              When  unset, the bottom entry of menus will never scroll up past
              the bottom of the screen, unless there  are  less  entries  than
              lines.  When set, the bottom entry may move off the bottom.

       menu_scroll
              Type: boolean
              Default: no

              When  set,  menus  will be scrolled up or down one line when you
              attempt to move across a screen boundary.  If unset, the  screen
              is  cleared  and  the  next  or  previous  page  of  the menu is
              displayed (useful for slow links to avoid many redraws).

       message_cache_clean
              Type: boolean
              Default: no

              If set, mutt will clean out obsolete entries  from  the  message
              cache  when  the mailbox is synchronized. You probably only want
              to set it every once in a while, since it can be a  little  slow
              (especially for large folders).

       message_cachedir
              Type: path
              Default: “”

              Set  this  to a directory and mutt will cache copies of messages
              from your IMAP and POP servers here.  You  are  free  to  remove
              entries at any time.

              When  setting  this variable to a directory, mutt needs to fetch
              every  remote  message  only  once  and  can   perform   regular
              expression searches as fast as for local folders.

              Also see the $message_cache_clean variable.

       message_format
              Type: string
              Default: “%s”

              This  is  the  string  displayed  in  the  “attachment” menu for
              attachments of type  message/rfc822.   For  a  full  listing  of
              defined    printf(3)-like   sequences   see   the   section   on
              $index_format.

       meta_key
              Type: boolean
              Default: no

              If set, forces Mutt to interpret keystrokes with  the  high  bit
              (bit  8) set as if the user had pressed the Esc key and whatever
              key remains after having the high bit removed.  For example,  if
              the key pressed has an ASCII value of 0xf8, then this is treated
              as if the user had pressed Esc then “x”.  This  is  because  the
              result  of removing the high bit from 0xf8 is 0x78, which is the
              ASCII character “x”.

       metoo
              Type: boolean
              Default: no

              If unset, Mutt will remove your address  (see  the  “alternates”
              command) from the list of recipients when replying to a message.

       mh_purge
              Type: boolean
              Default: no

              When unset, mutt will mimic mh’s behaviour  and  rename  deleted
              messages  to  ,<old  file  name> in mh folders instead of really
              deleting them.  This  leaves  the  message  on  disk  but  makes
              programs  reading  the folder ignore it. If the variable is set,
              the message files will simply be deleted.

              This option is similar to $maildir_trash for Maildir folders.

       mh_seq_flagged
              Type: string
              Default: “flagged”

              The name of the MH sequence used for flagged messages.

       mh_seq_replied
              Type: string
              Default: “replied”

              The name of the MH sequence used to tag replied messages.

       mh_seq_unseen
              Type: string
              Default: “unseen”

              The name of the MH sequence used for unseen messages.

       mime_forward
              Type: quadoption
              Default: no

              When set, the message you are forwarding will be attached  as  a
              separate  message/rfc822  MIME  part  instead of included in the
              main body of the message.  This is useful  for  forwarding  MIME
              messages so the receiver can properly view the message as it was
              delivered to you. If you like to switch  between  MIME  and  not
              MIME  from  mail  to  mail,  set  this  variable  to “ask-no” or
              “ask-yes”.

              Also see $forward_decode and $mime_forward_decode.

       mime_forward_decode
              Type: boolean
              Default: no

              Controls the decoding of complex MIME messages  into  text/plain
              when  forwarding a message while $mime_forward is set. Otherwise
              $forward_decode is used instead.

       mime_forward_rest
              Type: quadoption
              Default: yes

              When forwarding multiple attachments of a MIME message from  the
              attachment  menu,  attachments  which  cannot  be  decoded  in a
              reasonable manner will be attached to the newly composed message
              if this option is set.

       mix_entry_format
              Type: string
              Default: “%4n %c %-16s %a”

              This  variable  describes  the  format of a remailer line on the
              mixmaster chain selection screen.  The following  printf(3)-like
              sequences are supported:
              %n     The running number on the menu.
              %c     Remailer capabilities.
              %s     The remailer’s short name.
              %a     The remailer’s e-mail address.

       mixmaster
              Type: path
              Default: “mixmaster”

              This  variable contains the path to the Mixmaster binary on your
              system.  It is used with various sets of  parameters  to  gather
              the  list  of  known  remailers,  and  to finally send a message
              through the mixmaster chain.

              Note: On Debian systems,  this  option  is  set  by  default  to
              “mixmaster-filter” in /etc/Muttrc.

       move
              Type: quadoption
              Default: no

              Controls  whether  or not Mutt will move read messages from your
              spool mailbox to your $mbox mailbox, or as a result of a  “mbox-
              hook” command.

       narrow_tree
              Type: boolean
              Default: no

              This  variable,  when  set,  makes  the  thread  tree  narrower,
              allowing deeper threads to fit on the screen.

       net_inc
              Type: number
              Default: 10

              Operations that expect to transfer a large amount of  data  over
              the network will update their progress every $net_inc kilobytes.
              If set to 0, no progress messages will be displayed.

              See also $read_inc, $write_inc and $net_inc.

       pager
              Type: path
              Default: “builtin”

              This variable specifies which pager you would  like  to  use  to
              view  messages.  The  value  “builtin”  means to use the builtin
              pager, otherwise this variable should specify  the  pathname  of
              the external pager you would like to use.

              Using  an external pager may have some disadvantages: Additional
              keystrokes are necessary because you can’t call  mutt  functions
              directly  from  the pager, and screen resizes cause lines longer
              than the screen width to be badly formatted in the help menu.

       pager_context
              Type: number
              Default: 0

              This variable controls the number of lines of context  that  are
              given  when displaying the next or previous page in the internal
              pager.  By default, Mutt will display the line  after  the  last
              one  on  the  screen  at  the  top  of the next page (0 lines of
              context).

              This variable also specifies the amount  of  context  given  for
              search  results.  If  positive,  this  many  lines will be given
              before a match, if 0, the match will be top-aligned.

       pager_format
              Type: string
              Default: “-%Z- %C/%m: %-20.20n   %s%*  -- (%P)”

              This variable  controls  the  format  of  the  one-line  message
              “status” displayed before each message in either the internal or
              an external pager.   The  valid  sequences  are  listed  in  the
              $index_format section.

       pager_index_lines
              Type: number
              Default: 0

              Determines  the  number  of lines of a mini-index which is shown
              when in the pager.  The current message, unless near the top  or
              bottom  of the folder, will be roughly one third of the way down
              this mini-index, giving the reader the context of a few messages
              before  and  after the message.  This is useful, for example, to
              determine how many messages remain to be  read  in  the  current
              thread.   One  of  the lines is reserved for the status bar from
              the index, so a setting of 6 will  only  show  5  lines  of  the
              actual index.  A value of 0 results in no index being shown.  If
              the number of messages  in  the  current  folder  is  less  than
              $pager_index_lines,  then  the index will only use as many lines
              as it needs.

       pager_stop
              Type: boolean
              Default: no

              When set, the internal-pager will not move to the  next  message
              when  you are at the end of a message and invoke the <next-page>
              function.

       pgp_auto_decode
              Type: boolean
              Default: no

              If set, mutt will automatically attempt to  decrypt  traditional
              PGP  messages  whenever  the  user  performs  an operation which
              ordinarily would result in the contents  of  the  message  being
              operated   on.    For   example,   if   the   user   displays  a
              pgp-traditional message which has not been manually checked with
              the  <check-traditional-pgp>  function,  mutt will automatically
              check the message for traditional pgp.

       pgp_autoinline
              Type: boolean
              Default: no

              This option controls whether  Mutt  generates  old-style  inline
              (traditional)  PGP  encrypted  or  signed messages under certain
              circumstances.  This can be overridden by use of the  pgp  menu,
              when inline is not required.

              Note  that  Mutt  might  automatically use PGP/MIME for messages
              which consist of more than a single  MIME  part.   Mutt  can  be
              configured  to  ask before sending PGP/MIME messages when inline
              (traditional) would not work.

              Also see the $pgp_mime_auto variable.

              Also note  that  using  the  old-style  PGP  message  format  is
              strongly deprecated.  (PGP only)

       pgp_check_exit
              Type: boolean
              Default: yes

              If set, mutt will check the exit code of the PGP subprocess when
              signing or encrypting.  A non-zero  exit  code  means  that  the
              subprocess failed.  (PGP only)

       pgp_clearsign_command
              Type: string
              Default: “”

              This  format  is  used  to create an old-style “clearsigned” PGP
              message.   Note  that  the  use  of  this  format  is   strongly
              deprecated.

              This is a format string, see the $pgp_decode_command command for
              possible printf(3)-like sequences.  (PGP only)

       pgp_decode_command
              Type: string
              Default: “”

              This format strings specifies a command which is used to  decode
              application/pgp attachments.

              The  PGP  command  formats  have their own set of printf(3)-like
              sequences:
              %p     Expands to PGPPASSFD=0 when a pass phrase is  needed,  to
                     an  empty string otherwise. Note: This may be used with a
                     %? construct.
              %f     Expands to the name of a file containing a message.
              %s     Expands to the name of a file  containing  the  signature
                     part
                                of    a   multipart/signed   attachment   when
                     verifying it.
              %a     The value of $pgp_sign_as.
              %r     One or more key IDs.

              For examples on how to configure these formats for  the  various
              versions  of  PGP which are floating around, see the pgp and gpg
              sample configuration files in the  samples/  subdirectory  which
              has  been  installed on your system alongside the documentation.
              (PGP only)

       pgp_decrypt_command
              Type: string
              Default: “”

              This command is used to decrypt a PGP encrypted message.

              This is a format string, see the $pgp_decode_command command for
              possible printf(3)-like sequences.  (PGP only)

       pgp_encrypt_only_command
              Type: string
              Default: “”

              This  command is used to encrypt a body part without signing it.

              This is a format string, see the $pgp_decode_command command for
              possible printf(3)-like sequences.  (PGP only)

       pgp_encrypt_sign_command
              Type: string
              Default: “”

              This command is used to both sign and encrypt a body part.

              This is a format string, see the $pgp_decode_command command for
              possible printf(3)-like sequences.  (PGP only)

       pgp_entry_format
              Type: string
              Default: “%4n %t%f %4l/0x%k %-4a %2c %u”

              This variable allows you to customize the PGP key selection menu
              to your personal taste. This string is similar to $index_format,
              but has its own set of printf(3)-like sequences:
              %n     number
              %k     key id
              %u     user id
              %a     algorithm
              %l     key length
              %f     flags
              %c     capabilities
              %t     trust/validity of the key-uid association
              %[<s>] date of the key where <s> is an strftime(3) expression

              (PGP only)

       pgp_export_command
              Type: string
              Default: “”

              This command is used to export a public key from the user’s  key
              ring.

              This is a format string, see the $pgp_decode_command command for
              possible printf(3)-like sequences.  (PGP only)

       pgp_getkeys_command
              Type: string
              Default: “”

              This command is invoked  whenever  mutt  will  need  public  key
              information.  Of the sequences supported by $pgp_decode_command,
              %r is the only printf(3)-like sequence used  with  this  format.
              (PGP only)

       pgp_good_sign
              Type: regular expression
              Default: “”

              If  you  assign a text to this variable, then a PGP signature is
              only considered verified if the output from  $pgp_verify_command
              contains  the  text. Use this variable if the exit code from the
              command is 0 even for bad signatures.  (PGP only)

       pgp_ignore_subkeys
              Type: boolean
              Default: yes

              Setting this variable will cause Mutt to ignore OpenPGP subkeys.
              Instead,   the   principal   key   will   inherit  the  subkeys’
              capabilities.  Unset this if you want to  play  interesting  key
              selection games.  (PGP only)

       pgp_import_command
              Type: string
              Default: “”

              This  command  is  used  to import a key from a message into the
              user’s public key ring.

              This is a format string, see the $pgp_decode_command command for
              possible printf(3)-like sequences.  (PGP only)

       pgp_list_pubring_command
              Type: string
              Default: “”

              This  command  is  used  to list the public key ring’s contents.
              The output format must be analogous to the one used by

              gpg --list-keys --with-colons.

              This format is also generated by the pgpring utility which comes
              with mutt.

              This is a format string, see the $pgp_decode_command command for
              possible printf(3)-like sequences.  (PGP only)

       pgp_list_secring_command
              Type: string
              Default: “”

              This command is used to list the  secret  key  ring’s  contents.
              The output format must be analogous to the one used by:

              gpg --list-keys --with-colons.

              This format is also generated by the pgpring utility which comes
              with mutt.

              This is a format string, see the $pgp_decode_command command for
              possible printf(3)-like sequences.  (PGP only)

       pgp_long_ids
              Type: boolean
              Default: no

              If  set,  use 64 bit PGP key IDs, if unset use the normal 32 bit
              key IDs.  (PGP only)

       pgp_mime_auto
              Type: quadoption
              Default: ask-yes

              This  option  controls  whether  Mutt  will   prompt   you   for
              automatically   sending   a   (signed/encrypted)  message  using
              PGP/MIME when inline (traditional) fails (for any reason).

              Also note  that  using  the  old-style  PGP  message  format  is
              strongly deprecated.  (PGP only)

       pgp_replyinline
              Type: boolean
              Default: no

              Setting  this  variable  will  cause  Mutt  to always attempt to
              create an  inline  (traditional)  message  when  replying  to  a
              message  which  is  PGP  encrypted/signed  inline.   This can be
              overridden by use of the pgp menu, when inline is not  required.
              This  option  does  not automatically detect if the (replied-to)
              message is inline; instead  it  relies  on  Mutt  internals  for
              previously checked/flagged messages.

              Note  that  Mutt  might  automatically use PGP/MIME for messages
              which consist of more than a single  MIME  part.   Mutt  can  be
              configured  to  ask before sending PGP/MIME messages when inline
              (traditional) would not work.

              Also see the $pgp_mime_auto variable.

              Also note  that  using  the  old-style  PGP  message  format  is
              strongly deprecated.  (PGP only)

       pgp_retainable_sigs
              Type: boolean
              Default: no

              If  set,  signed  and  encrypted messages will consist of nested
              multipart/signed and multipart/encrypted body parts.

              This is  useful  for  applications  like  encrypted  and  signed
              mailing  lists,  where the outer layer (multipart/encrypted) can
              be easily removed, while  the  inner  multipart/signed  part  is
              retained.  (PGP only)

       pgp_show_unusable
              Type: boolean
              Default: yes

              If  set,  mutt  will  display  non-usable  keys  on  the PGP key
              selection menu.  This includes keys  which  have  been  revoked,
              have  expired,  or  have  been marked as “disabled” by the user.
              (PGP only)

       pgp_sign_as
              Type: string
              Default: “”

              If you have more than one key pair, this option  allows  you  to
              specify  which  of  your private keys to use.  It is recommended
              that  you  use  the  keyid  form  to  specify  your  key   (e.g.
              0x00112233).  (PGP only)

       pgp_sign_command
              Type: string
              Default: “”

              This  command is used to create the detached PGP signature for a
              multipart/signed PGP/MIME body part.

              This is a format string, see the $pgp_decode_command command for
              possible printf(3)-like sequences.  (PGP only)

       pgp_sort_keys
              Type: sort order
              Default: address

              Specifies  how  the  entries  in  the  pgp  menu are sorted. The
              following are legal values:
              address
                     sort alphabetically by user id
              keyid  sort alphabetically by key id
              date   sort by key creation date
              trust  sort by the trust of the key

              If you prefer reverse order of the above values, prefix it  with
              “reverse-”.  (PGP only)

       pgp_strict_enc
              Type: boolean
              Default: yes

              If  set, Mutt will automatically encode PGP/MIME signed messages
              as quoted-printable.  Please note that unsetting  this  variable
              may lead to problems with non-verifyable PGP signatures, so only
              change this if you know what you are doing.  (PGP only)

       pgp_timeout
              Type: number
              Default: 300

              The number of seconds  after  which  a  cached  passphrase  will
              expire if not used.  (PGP only)

       pgp_use_gpg_agent
              Type: boolean
              Default: no

              If  set,  mutt will use a possibly-running gpg-agent(1) process.
              (PGP only)

       pgp_verify_command
              Type: string
              Default: “”

              This command is used to verify PGP signatures.

              This is a format string, see the $pgp_decode_command command for
              possible printf(3)-like sequences.  (PGP only)

       pgp_verify_key_command
              Type: string
              Default: “”

              This  command  is  used  to  verify key information from the key
              selection menu.

              This is a format string, see the $pgp_decode_command command for
              possible printf(3)-like sequences.  (PGP only)

       pipe_decode
              Type: boolean
              Default: no

              Used in connection with the <pipe-message> command.  When unset,
              Mutt will pipe the messages without any preprocessing. When set,
              Mutt  will  weed headers and will attempt to decode the messages
              first.

       pipe_sep
              Type: string
              Default: “\n”

              The separator to add between messages  when  piping  a  list  of
              tagged messages to an external Unix command.

       pipe_split
              Type: boolean
              Default: no

              Used  in  connection  with the <pipe-message> function following
              <tag-prefix>.  If this variable is unset, when piping a list  of
              tagged messages Mutt will concatenate the messages and will pipe
              them all concatenated.  When set, Mutt will  pipe  the  messages
              one by one.  In both cases the messages are piped in the current
              sorted order, and the $pipe_sep separator is  added  after  each
              message.

       pop_auth_try_all
              Type: boolean
              Default: yes

              If  set,  Mutt  will  try  all available authentication methods.
              When unset, Mutt will only fall  back  to  other  authentication
              methods  if the previous methods are unavailable. If a method is
              available but authentication fails, Mutt will not connect to the
              POP server.

       pop_authenticators
              Type: string
              Default: “”

              This  is  a  colon-delimited list of authentication methods mutt
              may attempt to use to log in to an POP server, in the order mutt
              should  try  them.   Authentication  methods  are either “user”,
              “apop” or any  SASL  mechanism,  eg  “digest-md5”,  “gssapi”  or
              “cram-md5”.   This option is case-insensitive. If this option is
              unset (the default) mutt will  try  all  available  methods,  in
              order from most-secure to least-secure.

              Example:

              set pop_authenticators=”digest-md5:apop:user”

       pop_checkinterval
              Type: number
              Default: 60

              This variable configures how often (in seconds) mutt should look
              for new mail in the currently selected mailbox if it  is  a  POP
              mailbox.

       pop_delete
              Type: quadoption
              Default: ask-no

              If  set,  Mutt will delete successfully downloaded messages from
              the POP server  when  using  the  <fetch-mail>  function.   When
              unset,  Mutt  will  download messages but also leave them on the
              POP server.

       pop_host
              Type: string
              Default: “”

              The name of your POP server for the <fetch-mail> function.   You
              can also specify an alternative port, username and password, ie:

              [pop[s]://][username[:password]@]popserver[:port]

              where “[...]” denotes an optional part.

       pop_last
              Type: boolean
              Default: no

              If this variable is set, mutt will try to  use  the  “LAST”  POP
              command  for retrieving only unread messages from the POP server
              when using the <fetch-mail> function.

       pop_pass
              Type: string
              Default: “”

              Specifies the password for your POP  account.   If  unset,  Mutt
              will prompt you for your password when you open a POP mailbox.

              Warning:  you  should  only  use  this  option when you are on a
              fairly secure machine,  because  the  superuser  can  read  your
              muttrc even if you are the only one who can read the file.

       pop_reconnect
              Type: quadoption
              Default: ask-yes

              Controls  whether  or  not Mutt will try to reconnect to the POP
              server if the connection is lost.

       pop_user
              Type: string
              Default: “”

              Your login name on the POP server.

              This variable defaults to your user name on the local machine.

       post_indent_string
              Type: string
              Default: “”

              Similar to the $attribution  variable,  Mutt  will  append  this
              string  after  the inclusion of a message which is being replied
              to.

       postpone
              Type: quadoption
              Default: ask-yes

              Controls whether or not messages are  saved  in  the  $postponed
              mailbox when you elect not to send immediately.

              Also see the $recall variable.

       postponed
              Type: path
              Default: “~/postponed”

              Mutt  allows  you  to  indefinitely “postpone sending a message”
              which you are editing.  When you choose to postpone  a  message,
              Mutt saves it in the mailbox specified by this variable.

              Also see the $postpone variable.

       preconnect
              Type: string
              Default: “”

              If  set,  a  shell  command  to  be  executed  if  mutt fails to
              establish a connection to the server. This is useful for setting
              up  secure connections, e.g. with ssh(1). If the command returns
              a  nonzero status, mutt gives up opening the server. Example:

              set preconnect=”ssh -f -q -L 1234:mailhost.net:143 mailhost.net \
              sleep 20 < /dev/null > /dev/null”

              Mailbox  “foo”  on  “mailhost.net”  can  now   be   reached   as
              “{localhost:1234}foo”.

              Note:  For  this  example to work, you must be able to log in to
              the remote machine without having to enter a password.

       print
              Type: quadoption
              Default: ask-no

              Controls whether or not Mutt really prints  messages.   This  is
              set to “ask-no” by default, because some people accidentally hit
              “p” often.

       print_command
              Type: path
              Default: “lpr”

              This specifies the command pipe that should  be  used  to  print
              messages.

       print_decode
              Type: boolean
              Default: yes

              Used  in  connection  with the <print-message> command.  If this
              option is set, the message is decoded before it is passed to the
              external command specified by $print_command.  If this option is
              unset, no  processing  will  be  applied  to  the  message  when
              printing  it.  The latter setting may be useful if you are using
              some advanced printer filter which is able  to  properly  format
              e-mail messages for printing.

       print_split
              Type: boolean
              Default: no

              Used  in  connection  with the <print-message> command.  If this
              option is  set,  the  command  specified  by  $print_command  is
              executed  once for each message which is to be printed.  If this
              option is unset, the  command  specified  by  $print_command  is
              executed  only once, and all the messages are concatenated, with
              a form feed as the message separator.

              Those who use the enscript(1) program’s mail-printing mode  will
              most likely want to set this option.

       prompt_after
              Type: boolean
              Default: yes

              If  you use an external $pager, setting this variable will cause
              Mutt to prompt you for a command when  the  pager  exits  rather
              than returning to the index menu.  If unset, Mutt will return to
              the index menu when the external pager exits.

       query_command
              Type: path
              Default: “”

              This specifies the command that mutt will use to  make  external
              address  queries.   The string should contain a “%s”, which will
              be substituted with  the  query  string  the  user  types.   See
              “query” for more information.

       query_format
              Type: string
              Default: “%4c %t %-25.25a %-25.25n %?e?(%e)?”

              This  variable  describes  the  format  of the “query” menu. The
              following printf(3)-style sequences are understood:
              %a     destination address
              %c     current entry number
              %e     extra information *
              %n     destination name
              %t     “*” if current entry is tagged, a space otherwise
              %>X    right justify the rest of the string and pad with “X”
              %|X    pad to the end of the line with “X”
              %*X    soft-fill with character “X” as pad

              For  an  explanation  of  “soft-fill”,  see  the   $index_format
              documentation.

              * = can be optionally printed if nonzero, see the $status_format
              documentation.

       quit
              Type: quadoption
              Default: yes

              This variable controls whether “quit” and “exit”  actually  quit
              from mutt.  If this option is set, they do quit, if it is unset,
              they have no effect, and if it is set to ask-yes or ask-no,  you
              are prompted for confirmation when you try to quit.

       quote_regexp
              Type: regular expression
              Default: “^([ \t]*[|>:}#])+”

              A  regular  expression  used  in the internal pager to determine
              quoted sections of text in the body of a  message.  Quoted  text
              may  be  filtered  out  using  the  <toggle-quoted>  command, or
              colored according to the “color quoted” family of directives.

              Higher levels of quoting  may  be  colored  differently  (“color
              quoted1”,   “color   quoted2”,   etc.).  The  quoting  level  is
              determined by removing the last character from the matched  text
              and recursively reapplying the regular expression until it fails
              to produce a match.

              Match detection  may  be  overridden  by  the  $smileys  regular
              expression.

       read_inc
              Type: number
              Default: 10

              If  set  to  a  value  greater  than  0, Mutt will display which
              message it is currently  on  when  reading  a  mailbox  or  when
              performing  search actions such as search and limit. The message
              is printed after this many messages have been read  or  searched
              (e.g.,  if  set  to  25, Mutt will print a message when it is at
              message 25, and then again when it gets to  message  50).   This
              variable is meant to indicate progress when reading or searching
              large mailboxes which may take some time.  When set to 0, only a
              single message will appear before the reading the mailbox.

              Also  see  the  $write_inc, $net_inc and $time_inc variables and
              the   “tuning”   section   of   the   manual   for   performance
              considerations.

       read_only
              Type: boolean
              Default: no

              If set, all folders are opened in read-only mode.

       realname
              Type: string
              Default: “”

              This variable specifies what “real” or “personal” name should be
              used when sending messages.

              By default, this is the GECOS field from /etc/passwd.  Note that
              this variable will not be used when the user has set a real name
              in the $from variable.

       recall
              Type: quadoption
              Default: ask-yes

              Controls whether or not Mutt  recalls  postponed  messages  when
              composing a new message.

              Setting  this  variable to is not generally useful, and thus not
              recommended.

              Also see $postponed variable.

       record
              Type: path
              Default: “~/sent”

              This specifies the file into which your outgoing messages should
              be  appended.  (This is meant as the primary method for saving a
              copy of your messages, but another way to do this is  using  the
              “my_hdr”  command  to  create  a  “Bcc:”  field  with your email
              address in it.)

              The value of  $record  is  overridden  by  the  $force_name  and
              $save_name variables, and the “fcc-hook” command.

       reply_regexp
              Type: regular expression
              Default: “^(re([\[0-9\]+])*|aw):[ \t]*”

              A  regular  expression  used  to  recognize  reply messages when
              threading and replying. The default  value  corresponds  to  the
              English ”Re:” and the German ”Aw:”.

       reply_self
              Type: boolean
              Default: no

              If  unset  and  you  are replying to a message sent by you, Mutt
              will assume that you want to reply to  the  recipients  of  that
              message rather than to yourself.

              Also see the “alternates” command.

       reply_to
              Type: quadoption
              Default: ask-yes

              If  set,  when  replying to a message, Mutt will use the address
              listed in the Reply-to: header as the recipient  of  the  reply.
              If  unset,  it  will  use  the address in the From: header field
              instead.  This option is useful for reading a mailing list  that
              sets the Reply-To: header field to the list address and you want
              to send a private message to the author of a message.

       resolve
              Type: boolean
              Default: yes

              When set, the cursor will be automatically advanced to the  next
              (possibly  undeleted)  message  whenever a command that modifies
              the current message is executed.

       reverse_alias
              Type: boolean
              Default: no

              This variable controls whether or  not  Mutt  will  display  the
              “personal”  name from your aliases in the index menu if it finds
              an alias that matches the message’s sender.  For example, if you
              have the following alias:

              alias juser abd30425@somewhere.net (Joe User)

              and then you receive mail which contains the following header:

              From: abd30425@somewhere.net

              It would be displayed in the index menu as “Joe User” instead of
              “abd30425@somewhere.net.”  This  is  useful  when  the  person’s
              e-mail address is not human friendly.

       reverse_name
              Type: boolean
              Default: no

              It  may  sometimes  arrive  that  you  receive mail to a certain
              machine, move the messages to another machine, and reply to some
              the  messages  from there.  If this variable is set, the default
              From: line of the reply messages  is  built  using  the  address
              where  you  received  the  messages  you are replying to if that
              address matches your “alternates”.  If the variable is unset, or
              the  address that would be used doesn’t match your “alternates”,
              the From: line will use your address on the current machine.

              Also see the “alternates” command.

       reverse_realname
              Type: boolean
              Default: yes

              This variable fine-tunes  the  behaviour  of  the  $reverse_name
              feature.   When  it  is  set,  mutt  will  use  the address from
              incoming messages as-is, possibly including eventual real names.
              When  it  is  unset, mutt will override any such real names with
              the setting of the $realname variable.

       rfc2047_parameters
              Type: boolean
              Default: no

              When this variable is set, Mutt will decode RFC2047-encoded MIME
              parameters. You want to set this variable when mutt suggests you
              to save attachments to files named like:

              =?iso-8859-1?Q?file=5F=E4=5F991116=2Ezip?=

              When this variable is set interactively,  the  change  won’t  be
              active until you change folders.

              Note   that   this  use  of  RFC2047’s  encoding  is  explicitly
              prohibited by the standard, but nevertheless encountered in  the
              wild.

              Also  note  that setting this parameter will not have the effect
              that mutt generates this kind of encoding.  Instead,  mutt  will
              unconditionally use the encoding specified in RFC2231.

       save_address
              Type: boolean
              Default: no

              If set, mutt will take the sender’s full address when choosing a
              default folder for saving a mail. If $save_name  or  $force_name
              is  set  too, the selection of the Fcc folder will be changed as
              well.

       save_empty
              Type: boolean
              Default: yes

              When unset, mailboxes which contain no saved  messages  will  be
              removed  when closed (the exception is $spoolfile which is never
              removed).  If set, mailboxes are never removed.

              Note: This only applies to mbox and MMDF folders, Mutt does  not
              delete MH and Maildir directories.

       save_history
              Type: number
              Default: 0

              This  variable  controls  the size of the history (per category)
              saved in the $history_file file.

       save_name
              Type: boolean
              Default: no

              This variable controls  how  copies  of  outgoing  messages  are
              saved.   When set, a check is made to see if a mailbox specified
              by the recipient address exists (this is done by searching for a
              mailbox  in  the $folder directory with the username part of the
              recipient address).  If the mailbox exists, the outgoing message
              will be saved to that mailbox, otherwise the message is saved to
              the $record mailbox.

              Also see the $force_name variable.

       score
              Type: boolean
              Default: yes

              When this variable is unset, scoring is turned off.  This can be
              useful  to  selectively disable scoring for certain folders when
              the $score_threshold_delete variable and related are used.

       score_threshold_delete
              Type: number
              Default: -1

              Messages which have been assigned a score equal to or lower than
              the value of this variable are automatically marked for deletion
              by mutt.  Since mutt scores are always greater than or equal  to
              zero,  the  default  setting  of this variable will never mark a
              message for deletion.

       score_threshold_flag
              Type: number
              Default: 9999

              Messages which have been assigned a score greater than or  equal
              to this variable’s value are automatically marked ”flagged”.

       score_threshold_read
              Type: number
              Default: -1

              Messages which have been assigned a score equal to or lower than
              the value of this variable are automatically marked as  read  by
              mutt.   Since  mutt  scores  are always greater than or equal to
              zero, the default setting of this variable  will  never  mark  a
              message read.

       search_context
              Type: number
              Default: 0

              For the pager, this variable specifies the number of lines shown
              before search  results.  By  default,  search  results  will  be
              top-aligned.

       send_charset
              Type: string
              Default: “us-ascii:iso-8859-1:utf-8”

              A  colon-delimited list of character sets for outgoing messages.
              Mutt will use the first character set into which the text can be
              converted  exactly.   If  your  $charset is not “iso-8859-1” and
              recipients may  not  understand  “UTF-8”,  it  is  advisable  to
              include   in  the  list  an  appropriate  widely  used  standard
              character set (such as “iso-8859-2”, “koi8-r” or  “iso-2022-jp”)
              either instead of or after “iso-8859-1”.

              In  case the text cannot be converted into one of these exactly,
              mutt uses $charset as a fallback.

       sendmail
              Type: path
              Default: “/usr/sbin/sendmail -oem -oi”

              Specifies the program and arguments used to deliver mail sent by
              Mutt.   Mutt  expects  that  the  specified  program  interprets
              additional arguments as recipient addresses.

       sendmail_wait
              Type: number
              Default: 0

              Specifies the number  of  seconds  to  wait  for  the  $sendmail
              process  to  finish before giving up and putting delivery in the
              background.

              Mutt interprets the value of this variable as follows:
              >0     number of seconds to wait for sendmail to  finish  before
                     continuing
              0      wait forever for sendmail to finish
              <0     always put sendmail in the background without waiting

              Note that if you specify a value other than 0, the output of the
              child process will be put in a temporary file.  If there is some
              error, you will be informed as to where to find the output.

       shell
              Type: path
              Default: “”

              Command to use when spawning a subshell.  By default, the user’s
              login shell from /etc/passwd is used.

       sig_dashes
              Type: boolean
              Default: yes

              If set, a line containing “-- ” (note the trailing  space)  will
              be  inserted before your $signature.  It is strongly recommended
              that you not unset this variable unless your signature  contains
              just  your  name.   The reason for this is because many software
              packages use “-- \n” to detect  your  signature.   For  example,
              Mutt  has  the ability to highlight the signature in a different
              color in the builtin pager.

       sig_on_top
              Type: boolean
              Default: no

              If set, the signature will be  included  before  any  quoted  or
              forwarded  text.  It is strongly recommended that you do not set
              this variable unless you really know what you are doing, and are
              prepared to take some heat from netiquette guardians.

       signature
              Type: path
              Default: “~/.signature”

              Specifies  the  filename of your signature, which is appended to
              all outgoing messages.   If the filename ends with a pipe (“|”),
              it  is assumed that filename is a shell command and input should
              be read from its standard output.

       simple_search
              Type: string
              Default: “~f %s | ~s %s”

              Specifies how Mutt should expand a simple  search  into  a  real
              search  pattern.   A  simple search is one that does not contain
              any of the “~”  pattern  operators.   See  “patterns”  for  more
              information on search patterns.

              For  example,  if  you  simply  type  “joe” at a search or limit
              prompt, Mutt will automatically expand it to the value specified
              by  this  variable  by  replacing “%s” with the supplied string.
              For the default value, “joe” would be expanded to: “~f joe |  ~s
              joe”.

       sleep_time
              Type: number
              Default: 1

              Specifies  time,  in  seconds, to pause while displaying certain
              informational messages, while moving from folder to  folder  and
              after  expunging  messages from the current folder.  The default
              is to pause one second, so a  value  of  zero  for  this  option
              suppresses the pause.

       smart_wrap
              Type: boolean
              Default: yes

              Controls  the  display  of lines longer than the screen width in
              the internal pager. If set, long lines are  wrapped  at  a  word
              boundary.   If  unset,  lines  are  simply wrapped at the screen
              edge. Also see the $markers variable.

       smileys
              Type: regular expression
              Default: “(>From )|(:[-^]?[][)(><}{|/DP])”

              The  pager  uses  this  variable  to  catch  some  common  false
              positives   of  $quote_regexp,  most  notably  smileys  and  not
              consider a line quoted text if it also  matches  $smileys.  This
              mostly happens at the beginning of a line.

       pgp_mime_signature_filename
              Type: string
              Default: “signature.asc”

              This  option  sets  the  filename  used  for  signature parts in
              PGP/MIME signed messages.

       pgp_mime_signature_description
              Type: string
              Default: “Digital signature”

              This option sets  the  Content-Description  used  for  signature
              parts in PGP/MIME signed messages.

       smime_ask_cert_label
              Type: boolean
              Default: yes

              This flag controls whether you want to be asked to enter a label
              for a certificate about to be added to the database or  not.  It
              is set by default.  (S/MIME only)

       smime_ca_location
              Type: path
              Default: “”

              This variable contains the name of either a directory, or a file
              which  contains  trusted  certificates  for  use  with  OpenSSL.
              (S/MIME only)

              Note:  On  Debian  systems,  this defaults to the first existing
              file  in  the   following   list:   ~/.smime/ca-certificates.crt
              ~/.smime/ca-bundle.crt /etc/ssl/certs/ca-certificates.crt.

       smime_certificates
              Type: path
              Default: “”

              Since  for  S/MIME there is no pubring/secring as with PGP, mutt
              has to handle storage and retrieval of keys by itself.  This  is
              very  basic  right  now, and keys and certificates are stored in
              two  different  directories,  both  named  as   the   hash-value
              retrieved  from  OpenSSL.  There is an index file which contains
              mailbox-address keyid pairs, and which can be  manually  edited.
              This option points to the location of the certificates.  (S/MIME
              only)

       smime_decrypt_command
              Type: string
              Default: “”

              This format string specifies a command which is used to  decrypt
              application/x-pkcs7-mime attachments.

              The OpenSSL command formats have their own set of printf(3)-like
              sequences similar to PGP’s:
              %f     Expands to the name of a file containing a message.
              %s     Expands to the name of a file  containing  the  signature
                     part
                                of    a   multipart/signed   attachment   when
                     verifying it.
              %k     The key-pair specified with $smime_default_key
              %c     One or more certificate IDs.
              %a     The algorithm used for encryption.
              %C     CA location:  Depending on whether $smime_ca_location
                                points to a directory or file, this expands to
                                “-CApath   $smime_ca_location”   or   “-CAfile
                     $smime_ca_location”.

              For examples on how to configure these formats, see the smime.rc
              in  the  samples/  subdirectory which has been installed on your
              system alongside the documentation.  (S/MIME only)

       smime_decrypt_use_default_key
              Type: boolean
              Default: yes

              If set (default) this tells mutt to  use  the  default  key  for
              decryption.       Otherwise,      if      managing      multiple
              certificate-key-pairs, mutt will try to use the  mailbox-address
              to determine the key to use. It will ask you to supply a key, if
              it can’t find one.  (S/MIME only)

       smime_default_key
              Type: string
              Default: “”

              This is the default key-pair to use for signing.  This  must  be
              set to the keyid (the hash-value that OpenSSL generates) to work
              properly (S/MIME only)

       smime_encrypt_command
              Type: string
              Default: “”

              This command is used to create encrypted S/MIME messages.

              This is a format string, see the $smime_decrypt_command  command
              for possible printf(3)-like sequences.  (S/MIME only)

       smime_encrypt_with
              Type: string
              Default: “”

              This  sets  the  algorithm  that  should be used for encryption.
              Valid choices are “des”, “des3”, “rc2-40”, “rc2-64”,  “rc2-128”.
              If unset, “3des” (TripleDES) is used.  (S/MIME only)

       smime_get_cert_command
              Type: string
              Default: “”

              This  command  is used to extract X509 certificates from a PKCS7
              structure.

              This is a format string, see the $smime_decrypt_command  command
              for possible printf(3)-like sequences.  (S/MIME only)

       smime_get_cert_email_command
              Type: string
              Default: “”

              This  command  is  used to extract the mail address(es) used for
              storing X509 certificates, and  for  verification  purposes  (to
              check  whether  the  certificate  was  issued  for  the sender’s
              mailbox).

              This is a format string, see the $smime_decrypt_command  command
              for possible printf(3)-like sequences.  (S/MIME only)

       smime_get_signer_cert_command
              Type: string
              Default: “”

              This   command   is  used  to  extract  only  the  signers  X509
              certificate from a S/MIME signature, so that  the  certificate’s
              owner may get compared to the email’s “From:” field.

              This  is a format string, see the $smime_decrypt_command command
              for possible printf(3)-like sequences.  (S/MIME only)

       smime_import_cert_command
              Type: string
              Default: “”

              This command is used to import a certificate via smime_keys.

              This is a format string, see the $smime_decrypt_command  command
              for possible printf(3)-like sequences.  (S/MIME only)

       smime_is_default
              Type: boolean
              Default: no

              The   default   behaviour   of   mutt  is  to  use  PGP  on  all
              auto-sign/encryption operations. To override and to use  OpenSSL
              instead  this  must  be  set.  However, this has no effect while
              replying,  since  mutt  will  automatically  select   the   same
              application  that was used to sign/encrypt the original message.
              (Note  that  this  variable  can  be  overridden  by   unsetting
              $crypt_autosmime.)  (S/MIME only)

       smime_keys
              Type: path
              Default: “”

              Since  for  S/MIME there is no pubring/secring as with PGP, mutt
              has to handle storage and retrieval  of  keys/certs  by  itself.
              This  is  very basic right now, and stores keys and certificates
              in two different  directories,  both  named  as  the  hash-value
              retrieved  from  OpenSSL.  There is an index file which contains
              mailbox-address keyid pair, and which can  be  manually  edited.
              This option points to the location of the private keys.  (S/MIME
              only)

       smime_pk7out_command
              Type: string
              Default: “”

              This command is used  to  extract  PKCS7  structures  of  S/MIME
              signatures,  in order to extract the public X509 certificate(s).

              This is a format string, see the $smime_decrypt_command  command
              for possible printf(3)-like sequences.  (S/MIME only)

       smime_sign_command
              Type: string
              Default: “”

              This  command  is  used  to  created  S/MIME  signatures of type
              multipart/signed, which can be read by all mail clients.

              This is a format string, see the $smime_decrypt_command  command
              for possible printf(3)-like sequences.  (S/MIME only)

       smime_sign_opaque_command
              Type: string
              Default: “”

              This  command  is  used  to  created  S/MIME  signatures of type
              application/x-pkcs7-signature, which can only be handled by mail
              clients supporting the S/MIME extension.

              This  is a format string, see the $smime_decrypt_command command
              for possible printf(3)-like sequences.  (S/MIME only)

       smime_timeout
              Type: number
              Default: 300

              The number of seconds  after  which  a  cached  passphrase  will
              expire if not used.  (S/MIME only)

       smime_verify_command
              Type: string
              Default: “”

              This  command  is  used  to  verify  S/MIME  signatures  of type
              multipart/signed.

              This is a format string, see the $smime_decrypt_command  command
              for possible printf(3)-like sequences.  (S/MIME only)

       smime_verify_opaque_command
              Type: string
              Default: “”

              This  command  is  used  to  verify  S/MIME  signatures  of type
              application/x-pkcs7-mime.

              This is a format string, see the $smime_decrypt_command  command
              for possible printf(3)-like sequences.  (S/MIME only)

       smtp_authenticators
              Type: string
              Default: “”

              This  is  a  colon-delimited list of authentication methods mutt
              may attempt to use to log in to an SMTP  server,  in  the  order
              mutt  should  try  them.   Authentication  methods  are any SASL
              mechanism, eg “digest-md5”, “gssapi” or “cram-md5”.  This option
              is  case-insensitive.  If  it is “unset” (the default) mutt will
              try  all  available  methods,  in  order  from  most-secure   to
              least-secure.

              Example:

              set smtp_authenticators=”digest-md5:cram-md5”

              Note:  On  Debian systems, this variable defaults to the example
              mentioned.  This  file  is  managed  by  the   “ca-certificates”
              package.

       smtp_pass
              Type: string
              Default: “”

              Specifies  the  password  for your SMTP account.  If unset, Mutt
              will prompt you for your password when you first send  mail  via
              SMTP.  See $smtp_url to configure mutt to send mail via SMTP.

              Warning:  you  should  only  use  this  option when you are on a
              fairly secure machine,  because  the  superuser  can  read  your
              muttrc even if you are the only one who can read the file.

       smtp_url
              Type: string
              Default: “”

              Defines  the  SMTP  smarthost where sent messages should relayed
              for delivery. This should take the form of an SMTP URL, eg:

              smtp[s]://[user[:pass]@]host[:port]/

              where “[...]” denotes an optional part.  Setting  this  variable
              overrides the value of the $sendmail variable.

       sort
              Type: sort order
              Default: date

              Specifies  how  to  sort  messages  in  the “index” menu.  Valid
              values are:
              ‐ date or date-sent
              ‐ date-received
              ‐ from
              ‐ mailbox-order (unsorted)
              ‐ score
              ‐ size
              ‐ spam
              ‐ subject
              ‐ threads
              ‐ to

              You may optionally use the “reverse-” prefix to specify  reverse
              sorting order (example: “set sort=reverse-date-sent”).

              Note:  On  Debian  systems,  this  option  is  set by default to
              “threads” in /etc/Muttrc.

       sort_alias
              Type: sort order
              Default: alias

              Specifies how the entries in the “alias” menu are  sorted.   The
              following are legal values:
              ‐ address (sort alphabetically by email address)
              ‐ alias (sort alphabetically by alias name)
              ‐ unsorted (leave in order specified in .muttrc)

       sort_aux
              Type: sort order
              Default: date

              When  sorting by threads, this variable controls how threads are
              sorted in relation to other threads, and how the branches of the
              thread  trees  are  sorted.   This  can be set to any value that
              $sort can, except “threads” (in that case, mutt  will  just  use
              “date-sent”).   You  can  also  specify  the  “last-”  prefix in
              addition to the “reverse-” prefix, but “last-” must  come  after
              “reverse-”.   The  “last-”  prefix  causes messages to be sorted
              against its siblings by which has the last descendant, using the
              rest of $sort_aux as an ordering.  For instance,

              set sort_aux=last-date-received

              would  mean  that if a new message is received in a thread, that
              thread becomes the last one displayed (or the first, if you have
              “set sort=reverse-threads”.)

              Note:  For  reversed  $sort  order  $sort_aux  is reversed again
              (which is not the right thing to do, but kept to not  break  any
              existing configuration setting).

       sort_browser
              Type: sort order
              Default: alpha

              Specifies  how to sort entries in the file browser.  By default,
              the entries are sorted alphabetically.  Valid values:
              ‐ alpha (alphabetically)
              ‐ date
              ‐ size
              ‐ unsorted

              You may optionally use the “reverse-” prefix to specify  reverse
              sorting order (example: “set sort_browser=reverse-date”).

       sort_re
              Type: boolean
              Default: yes

              This  variable  is  only  useful  when  sorting  by threads with
              $strict_threads unset.  In that case, it changes  the  heuristic
              mutt  uses  to  thread  messages by subject.  With $sort_re set,
              mutt will only attach a message as the child of another  message
              by  subject  if  the  subject of the child message starts with a
              substring matching the setting of $reply_regexp.  With  $sort_re
              unset,  mutt  will attach the message whether or not this is the
              case, as long as the non-$reply_regexp parts  of  both  messages
              are identical.

       spam_separator
              Type: string
              Default: “,”

              This  variable  controls what happens when multiple spam headers
              are matched: if unset, each successive header will overwrite any
              previous  matches  value  for  the  spam  label.  If  set,  each
              successive  match  will  append  to  the  previous,  using  this
              variable’s value as a separator.

       spoolfile
              Type: path
              Default: “”

              If  your  spool  mailbox  is  in  a non-default place where Mutt
              cannot find it, you can specify its location with this variable.
              Mutt  will  initially  set  this  variable  to  the value of the
              environment variable $MAIL or $MAILDIR if either is defined.

       ssl_ca_certificates_file
              Type: path
              Default: “”

              This  variable  specifies   a   file   containing   trusted   CA
              certificates.  Any server certificate that is signed with one of
              these CA certificates is also automatically accepted.

              Example:

              set ssl_ca_certificates_file=/etc/ssl/certs/ca-certificates.crt

       ssl_client_cert
              Type: path
              Default: “”

              The file containing a  client  certificate  and  its  associated
              private key.

       ssl_force_tls
              Type: boolean
              Default: no

              If  this variable is set, Mutt will require that all connections
              to remote servers be encrypted. Furthermore it will  attempt  to
              negotiate  TLS  even  if  the  server  does  not  advertise  the
              capability,  since  it  would  otherwise  have  to   abort   the
              connection anyway. This option supersedes $ssl_starttls.

       ssl_min_dh_prime_bits
              Type: number
              Default: 0

              This  variable  specifies  the minimum acceptable prime size (in
              bits) for use in any Diffie-Hellman key exchange. A value  of  0
              will use the default from the GNUTLS library.

       ssl_starttls
              Type: quadoption
              Default: yes

              If  set  (the  default),  mutt  will  attempt to use STARTTLS on
              servers advertising the capability. When unset,  mutt  will  not
              attempt to use STARTTLS regardless of the server’s capabilities.

       ssl_use_sslv3
              Type: boolean
              Default: yes

              This variable specifies whether to attempt to use SSLv3  in  the
              SSL authentication process.

       ssl_use_tlsv1
              Type: boolean
              Default: yes

              This  variable  specifies whether to attempt to use TLSv1 in the
              SSL authentication process.

       ssl_verify_dates
              Type: boolean
              Default: yes

              If set (the default),  mutt  will  not  automatically  accept  a
              server  certificate  that  is  either  not  yet valid or already
              expired. You should only unset this for particular known  hosts,
              using the <account-hook> function.

       ssl_verify_host
              Type: boolean
              Default: yes

              If  set  (the  default),  mutt  will  not automatically accept a
              server certificate whose host name does not match the host  used
              in  your  folder  URL. You should only unset this for particular
              known hosts, using the <account-hook> function.

       status_chars
              Type: string
              Default: “-*%A”

              Controls  the  characters  used  by  the   “%r”   indicator   in
              $status_format.  The first character is used when the mailbox is
              unchanged. The second is used when the mailbox has been changed,
              and  it  needs  to  be  resynchronized. The third is used if the
              mailbox is in read-only mode, or if  the  mailbox  will  not  be
              written  when  exiting  that  mailbox (You can toggle whether to
              write changes to a mailbox with  the  <toggle-write>  operation,
              bound  by  default  to “%”). The fourth is used to indicate that
              the current folder has  been  opened  in  attach-  message  mode
              (Certain   operations  like  composing  a  new  mail,  replying,
              forwarding, etc. are not permitted in this mode).

       status_format
              Type: string
              Default: “-%r-Mutt: %f [Msgs:%?M?%M/?%m%?n? New:%n?%?o? Old:%o?%?d? Del:%d?%?F? Flag:%F?%?t? Tag:%t?%?p? Post:%p?%?b? Inc:%b?%?l? %l?]---(%s/%S)-%>-(%P)---”

              Controls the format of the status line displayed in the  “index”
              menu.   This string is similar to $index_format, but has its own
              set of printf(3)-like sequences:
              %b     number of mailboxes with new mail *
              %d     number of deleted messages *
              %f     the full pathname of the current mailbox
              %F     number of flagged messages *
              %h     local hostname
              %l     size (in bytes) of the current mailbox *
              %L     size (in bytes) of the messages shown (i.e., which  match
                     the current limit) *
              %m     the number of messages in the mailbox *
              %M     the  number  of  messages  shown  (i.e.,  which match the
                     current limit) *
              %n     number of new messages in the mailbox *
              %o     number of old unread messages *
              %p     number of postponed messages *
              %P     percentage of the way through the index
              %r     modified/read-only/won’t-write/attach-message  indicator,
                     according to $status_chars
              %s     current sorting mode ($sort)
              %S     current aux sorting method ($sort_aux)
              %t     number of tagged messages *
              %u     number of unread messages *
              %v     Mutt version string
              %V     currently active limit pattern, if any *
              %>X    right justify the rest of the string and pad with “X”
              %|X    pad to the end of the line with “X”
              %*X    soft-fill with character “X” as pad

              For   an  explanation  of  “soft-fill”,  see  the  $index_format
              documentation.

              * = can be optionally printed if nonzero

              Some of the above sequences can be used to  optionally  print  a
              string  if  their  value  is nonzero.  For example, you may only
              want to see the number of  flagged  messages  if  such  messages
              exist, since zero is not particularly meaningful.  To optionally
              print a string based  upon  one  of  the  above  sequences,  the
              following construct is used:

              %?<sequence_char>?<optional_string>?

              where  sequence_char  is  a  character from the table above, and
              optional_string  is  the  string  you  would  like  printed   if
              sequence_char  is  nonzero.   optional_string  may contain other
              sequences as well as normal text, but you may not nest  optional
              strings.

              Here  is  an  example  illustrating  how to optionally print the
              number of new messages in a mailbox:

              %?n?%n new messages.?

              You can also switch between  two  strings  using  the  following
              construct:

              %?<sequence_char>?<if_string>&<else_string>?

              If  the  value  of  sequence_char is non-zero, if_string will be
              expanded, otherwise else_string will be expanded.

              You can force the result of any printf(3)-like  sequence  to  be
              lowercase by prefixing the sequence character with an underscore
              (“_”) sign.  For example, if  you  want  to  display  the  local
              hostname in lowercase, you would use: “%_h”.

              If  you  prefix  the  sequence  character  with  a  colon  (“:”)
              character, mutt will  replace  any  dots  in  the  expansion  by
              underscores.  This might be helpful with IMAP folders that don’t
              like dots in folder names.

       status_on_top
              Type: boolean
              Default: no

              Setting this variable causes the “status bar” to be displayed on
              the  first  line  of  the screen rather than near the bottom. If
              $help is set, too it’ll be placed at the bottom.

       strict_threads
              Type: boolean
              Default: no

              If set, threading will only make use of  the  “In-Reply-To”  and
              “References:”  fields  when  you  $sort  by message threads.  By
              default, messages with the same subject are grouped together  in
              “pseudo  threads.”. This may not always be desirable, such as in
              a personal  mailbox  where  you  might  have  several  unrelated
              messages  with  the  subjects  like  “hi” which will get grouped
              together.  See  also  $sort_re  for  a  less  drastic   way   of
              controlling this behaviour.

       suspend
              Type: boolean
              Default: yes

              When unset, mutt won’t stop when the user presses the terminal’s
              susp key, usually “^Z”. This is useful if you run mutt inside an
              xterm using a command like “xterm -e mutt”.

       text_flowed
              Type: boolean
              Default: no

              When  set,  mutt  will  generate  “format=flowed”  bodies with a
              content type of “text/plain;  format=flowed”.   This  format  is
              easier  to  handle for some mailing software, and generally just
              looks like ordinary text.  To actually make use of this format’s
              features, you’ll need support in your editor.

              Note that $indent_string is ignored when this option is set.

       thorough_search
              Type: boolean
              Default: no

              Affects  the  ~b  and  ~h search operations described in section
              “patterns”.   If  set,  the  headers  and  body/attachments   of
              messages  to be searched are decoded before searching. If unset,
              messages are searched as they appear in the folder.

              Users searching attachments or for non-ASCII  characters  should
              set   this   value   because   decoding   also   includes   MIME
              parsing/decoding  and  possible   character   set   conversions.
              Otherwise  mutt  will  attempt  to match against the raw message
              received (for example quoted-printable encoded or  with  encoded
              headers) which may lead to incorrect search results.

       thread_received
              Type: boolean
              Default: no

              When  set, mutt uses the date received rather than the date sent
              to thread messages by subject.

       tilde
              Type: boolean
              Default: no

              When set, the internal-pager will pad blank lines to the  bottom
              of the screen with a tilde (“~”).

       time_inc
              Type: number
              Default: 0

              Along  with  $read_inc,  $write_inc, and $net_inc, this variable
              controls  the  frequency  with  which   progress   updates   are
              displayed.   It   suppresses   updates   less   than   $time_inc
              milliseconds apart. This can improve throughput on systems  with
              slow terminals, or when running mutt on a remote system.

              Also  see  the  “tuning”  section  of the manual for performance
              considerations.

       timeout
              Type: number
              Default: 600

              When Mutt is waiting for user input either idleing in  menus  or
              in  an  interactive  prompt,  Mutt  would  block  until input is
              present. Depending on the context, this  would  prevent  certain
              operations  from  working, like checking for new mail or keeping
              an IMAP connection alive.

              This variable controls how many seconds Mutt will at  most  wait
              until it aborts waiting for input, performs these operations and
              continues to wait for input.

              A value of zero or less will cause Mutt to never time out.

       tmpdir
              Type: path
              Default: “”

              This variable allows you to specify where Mutt  will  place  its
              temporary  files  needed  for displaying and composing messages.
              If this variable is not set, the environment variable $TMPDIR is
              used.  If $TMPDIR is not set then “/tmp” is used.

       to_chars
              Type: string
              Default: “ +TCFL”

              Controls  the  character used to indicate mail addressed to you.
              The first character is  the  one  used  when  the  mail  is  not
              addressed  to your address.  The second is used when you are the
              only recipient of the message.  The third is when  your  address
              appears  in  the  “To:”  header  field, but you are not the only
              recipient of the message.  The fourth  character  is  used  when
              your address is specified in the “Cc:” header field, but you are
              not the only recipient.  The fifth character is used to indicate
              mail  that  was  sent  by  you.   The sixth character is used to
              indicate when a mail was sent to a  mailing-list  you  subscribe
              to.

       trash
              Type: path
              Default: “”

              If  set,  this  variable  specifies the path of the trash folder
              where the mails marked for deletion will be  moved,  instead  of
              being irremediably purged.

              NOTE:  When  you  delete  a  message  in the trash folder, it is
              really deleted, so that you have a way to clean the trash.

       tunnel
              Type: string
              Default: “”

              Setting this variable will cause  mutt  to  open  a  pipe  to  a
              command  instead of a raw socket. You may be able to use this to
              set  up  preauthenticated  connections  to  your  IMAP/POP3/SMTP
              server. Example:

              set tunnel=”ssh -q mailhost.net /usr/local/libexec/imapd”

              Note: For this example to work you must be able to log in to the
              remote machine without having to enter a password.

              When set, Mutt uses  the  tunnel  for  all  remote  connections.
              Please see “account-hook” in the manual for how to use different
              tunnel commands per connection.

       uncollapse_jump
              Type: boolean
              Default: no

              When set, Mutt will jump to the next  unread  message,  if  any,
              when the current thread is uncollapsed.

       use_8bitmime
              Type: boolean
              Default: no

              Warning: do not set this variable unless you are using a version
              of sendmail which supports the -B8BITMIME flag (such as sendmail
              8.8.x) or you may not be able to send mail.

              When  set,  Mutt  will invoke $sendmail with the -B8BITMIME flag
              when sending 8-bit messages to enable ESMTP negotiation.

       use_domain
              Type: boolean
              Default: yes

              When set, Mutt will qualify all local  addresses  (ones  without
              the  “@host” portion) with the value of $hostname.  If unset, no
              addresses will be qualified.

       use_envelope_from
              Type: boolean
              Default: no

              When set, mutt will set the envelope sender of the message.   If
              $envelope_from_address  is  set,  it  will be used as the sender
              address. If unset, mutt will attempt to derive the  sender  from
              the “From:” header.

              Note  that  this information is passed to sendmail command using
              the -f command line switch. Therefore setting this option is not
              useful  if  the $sendmail variable already contains -f or if the
              executable pointed  to  by  $sendmail  doesn’t  support  the  -f
              switch.

       use_from
              Type: boolean
              Default: yes

              When  set,  Mutt  will  generate  the  “From:” header field when
              sending messages.  If unset, no “From:”  header  field  will  be
              generated unless the user explicitly sets one using the “my_hdr”
              command.

       use_idn
              Type: boolean
              Default: yes

              When set, Mutt will show you international domain names decoded.
              Note:  You  can  use  IDNs  for addresses even if this is unset.
              This variable only affects decoding.

       use_ipv6
              Type: boolean
              Default: yes

              When set, Mutt will look for IPv6 addresses of hosts it tries to
              contact.   If this option is unset, Mutt will restrict itself to
              IPv4 addresses.  Normally, the default should work.

       user_agent
              Type: boolean
              Default: yes

              When set, mutt will  add  a  “User-Agent:”  header  to  outgoing
              messages,   indicating  which  version  of  mutt  was  used  for
              composing them.

       visual
              Type: path
              Default: “”

              Specifies the visual editor to invoke when the “~v”  command  is
              given in the builtin editor.

       wait_key
              Type: boolean
              Default: yes

              Controls  whether  Mutt  will  ask  you  to press a key after an
              external  command  has  been   invoked   by   these   functions:
              <shell-escape>,  <pipe-message>,  <pipe-entry>, <print-message>,
              and <print-entry> commands.

              It is also  used  when  viewing  attachments  with  “auto_view”,
              provided   that   the   corresponding   mailcap   entry   has  a
              needsterminal flag, and the external program is interactive.

              When set, Mutt will always ask for a key. When unset, Mutt  will
              wait  for a key only if the external command returned a non-zero
              status.

       weed
              Type: boolean
              Default: yes

              When set, mutt will weed headers  when  displaying,  forwarding,
              printing, or replying to messages.

       wrap
              Type: number
              Default: 0

              When  set  to  a  positive  value,  mutt will wrap text at $wrap
              characters.  When set to a negative value, mutt will  wrap  text
              so  that  there are $wrap characters of empty space on the right
              side of the terminal.

       wrap_search
              Type: boolean
              Default: yes

              Controls whether searches wrap around the end.

              When set, searches will wrap around the first  (or  last)  item.
              When unset, incremental searches will not wrap.

       wrapmargin
              Type: number
              Default: 0

              (DEPRECATED)  Equivalent to setting $wrap with a negative value.

       write_bcc
              Type: boolean
              Default: yes

              Controls  whether  mutt  writes  out  the  “Bcc:”  header   when
              preparing  messages  to  be  sent.  Exim users may wish to unset
              this.  If  mutt  is  set  to  deliver  directly  via  SMTP  (see
              $smtp_url),  this option does nothing: mutt will never write out
              the “Bcc:” header in this case.

              Note: On Debian systems, exim4 and postfix strip BCC headers  by
              default.   The   above  warning  applies  to  exim3  users,  see
              /etc/Muttrc.

       write_inc
              Type: number
              Default: 10

              When  writing  a  mailbox,  a  message  will  be  printed  every
              $write_inc  messages  to indicate progress.  If set to 0, only a
              single message will be displayed before writing a mailbox.

              Also see the $read_inc, $net_inc and $time_inc variables and the
              “tuning” section of the manual for performance considerations.

       xterm_icon
              Type: string
              Default: “M%?n?AIL&ail?”

              Controls   the   format   of   the   icon   title,  as  long  as
              xterm_set_titles  is  enabled.  This  string  is  identical   in
              formatting to the one used by “$status_format”.

       xterm_set_titles
              Type: boolean
              Default: no

              Controls whether mutt sets the xterm title bar and icon name (as
              long as you are in an appropriate terminal).

       xterm_title
              Type: string
              Default: “Mutt with %?m?%m messages&no messages?%?n? [%n NEW]?”

              Controls the format of the title bar of the xterm provided  that
              xterm_set_titles  has  been  set.  This  string  is identical in
              formatting to the one used by “$status_format”.

SEE ALSO

       iconv(1),   iconv(3),   mailcap(5),   maildir(5),   mbox(5),   mutt(1),
       printf(3), regex(7), strftime(3)

       The Mutt Manual

       The Mutt home page: http://www.mutt.org/

AUTHOR

       Michael  Elkins,  and  others.   Use <mutt-dev@mutt.org> to contact the
       developers.