Provided by: mutt_1.5.11-3ubuntu2_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 for which should be evaluated.  For example, backtics
       are evaluated inside of double quotes, but not for 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
       backquotes (‘command‘).

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

COMMANDS

       alias key address [, address [ ... ]]
       unalias [ *  | key ]

              alias defines an alias key for  the  given  addresses.   unalias
              removes  the alias corresponding to the given key or all aliases
              when “*” is used as an argument.

       alternates 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.

       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
              multipe 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/backgound  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 regexp [ regexp ... ]
       unlists regexp [ regexp ... ]
       subscribe 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.

       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
              varibles.

              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 variabe all, all variables
              will reset to their system 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 a list of operators,
       see 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 EXPR                                           messages which contain EXPR in the whole message
       ~c EXPR                                           messages carbon-copied to EXPR
       ~C EXPR                                           message is either to: or cc: EXPR
       ~d MIN-MAX                                        messages with “date-sent” in a Date range
       ~D                                                deleted messages
       ~e EXPR                                           message which contains EXPR in the “Sender” field
       ~E                                                expired messages
       ~f EXPR                                           messages originating from EXPR
       ~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                                           message which match EXPR in the “Message-ID” field
       ~k                                                message contains PGP key material
       ~l                                                message is addressed to a known mailing list
       ~L EXPR                                           message is either originated or received by EXPR
       ~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                                                message is addressed to you (consults $alternates)
       ~P                                                message is from you (consults $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                                                message is addressed to a subscribed mailing list
       ~U                                                unread messages
       ~v                                                message is part of a collapsed thread.
       ~V                                                cryptographically verified messages
       ~x EXPR                                           messages which contain EXPR in the “References” 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 (requries threaded view)

       In the above, EXPR is a regular expression.

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

   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.

              Note: Mutt will not automatically source  this  file;  you  must
              explicitly use the “source” command for it to be executed.

       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.

       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: “us-ascii”

              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.
              This variable is valid only if $strict_mime is unset.

       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-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=inline, A=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

              %>X    right justify  the  rest  of  the  string  and  pad  with
                     character ”X”

              %|X    pad to the end of the line with character ”X”

       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()-like sequences see the section on “$index_format”.

       autoedit
              Type: boolean
              Default: no

              When  set along with “$edit_headers”, Mutt will skip the initial
              send-menu 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.

              Also see “$fast_reply”.

       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 (default: ”;”)
              to make the next function apply to all tagged messages.

       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.

       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 disabled by  default  because  many  visual  terminals
              don’t permit making the cursor invisible.

       charset
              Type: string
              Default: “”

              Character  set  your  terminal uses to display and enter textual
              data.

       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 check_new 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.

       uncollapse_jump
              Type: boolean
              Default: no

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

       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()-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.

       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 or POP)
              after this many seconds if the connection  is  not  able  to  be
              established.   A negative value causes Mutt to wait indefinitely
              for the connection 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_use_gpgme
              Type: boolean
              Default: no

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

       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_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”.

       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  call  to  process  the  date.  See  the  man  page for
              strftime(3) 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  send-hooks,  message-hooks, save-
              hooks, and fcc-hooks 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: “”

              Note: you should not enable this unless you are  using  Sendmail
              8.8.x or greater.

              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”

       dsn_return
              Type: string
              Default: “”

              Note: you should not enable this unless you are  using  Sendmail
              8.8.x or greater.

              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

       duplicate_threads
              Type: boolean
              Default: yes

              This  variable  controls  whether mutt, when sorting by 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 diagram.

       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.

       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 ” in the beginning of a line.  Useful
              to avoid the  tampering  certain  mail  delivery  and  transport
              agents tend to do with messages.

       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: boolean
              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)

       file_charset
              Type: string
              Default: “”

              This variable is a colon-separated list  of  character  encoding
              schemes  for  text  file attatchments.  If unset, $charset value
              will be used instead.  For example, the following  configuration
              would work for Japanese text handling:

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

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

       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 during the ‘set’ 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()-like sequences:

              %C     current file number

              %d     date/time folder was last modified

              %f     filename

              %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”

       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_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  send-hooks) and
              “$reverse_name”.  This variable is  ignored  if  “$use_from”  is
              unset.

              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.  By default the regular
              expression is set to ”^[^,]*” which will return the string up to
              the first ”,” encountered.  If the GECOS field contains a string
              like   ”lastname,   firstname”   then   you   should   set   the
              gecos_mask=”.*”.

              This can be useful  if  you  see  the  following  behavior:  you
              address  a  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.

       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. The buffer is  cleared
              each time the variable is set.

       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 hostname to use after  the  “@”  in  local  e-mail
              addresses.   This overrides the compile time definition obtained
              from /etc/resolv.conf.

       ignore_list_reply_to
              Type: boolean
              Default: no

              Affects the behaviour of the reply  function  when  replying  to
              messages from mailing lists.  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 parameter is case-
              insensitive. If this parameter is 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. See also the “mailboxes” command.

       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  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.

       imap_home_namespace
              Type: string
              Default: “”

              You  normally  want  to see your personal folders alongside your
              INBOX in the IMAP browser. If you see something  else,  you  may
              set this variable to the IMAP path to your folders.

       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 fetch-mail
              function.  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_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.

       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  to  format  output  (see the man page for more
              detail).  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     entire From: line (address + real name)

              %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     (_O_riginal save folder)  Where mutt would formerly  have
                     stashed  the  message:  list name or recipient name if no
                     list

              %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

              %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”; 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”; a leading bang disables locales

              %(fmt) the  local  date  and time when the message was received.
                     “fmt” is expanded by the library function  “strftime”;  a
                     leading bang disables locales

              %<fmt> the  current local time. “fmt” is expanded by the library
                     function “strftime”; 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”

              See also: “$to_chars”.

       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 variable LC_TIME.

       mail_check
              Type: number
              Default: 5

              This variable configures how often (in seconds) mutt should look
              for new mail.

       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_mtime
              Type: boolean
              Default: no

              If  set,  the  sort-by-date  option  in  the  browser  will sort
              maildirs smartly, not using the mtime of the maildir itself  but
              that  of  the newest message in the new subdirectory, making the
              sorting by reverse date much more useful. People  with  maildirs
              over NFS may wish to leave this option unset.

       header_cache
              Type: path
              Default: “”

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

       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.

       header_cache_pagesize
              Type: string
              Default: “16384”

              Change the header cache database page size.  Too  large  or  too
              small  values  can waste space, memory, or CPU time. The default
              should be more or less the best you can get. For details, google
              for mutt header cache (first hit).

       maildir_trash
              Type: boolean
              Default: no

              If  set,  messages  marked  as  deleted  will  be saved with the
              maildir (T)rashed 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.

       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.

       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.

       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).

       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”.

       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.   If the variable is set, the message files will
              simply be deleted.

       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  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
              recvattach menu,  attachments  which  cannot  be  decoded  in  a
              reasonable manner will be attached to the newly composed message
              if this option is set.

       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.

       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-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.

       move
              Type: quadoption
              Default: ask-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.

       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()-like    sequences   see   the   section   on
              “$index_format”.

       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 “$read_inc” and “$write_inc”.

       pager
              Type: path
              Default: “builtin”

              This  variable  specifies  which  pager you would like to use to
              view  messages.   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).

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

              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 pager_index_lines 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.

       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.   (Crypto
              only)

       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.  (Crypto 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)

       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)

       pgp_use_gpg_agent
              Type: boolean
              Default: no

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

       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  “no”,
              never attempt to verify cryptographic signatures.  (Crypto 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_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_decrypt_use_default_key
              Type: boolean
              Default: yes

              If set (default) this tells mutt to  use  the  default  key  for
              decryption. Otherwise, if manage 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)

       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()-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_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_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_long_ids
              Type: boolean
              Default: no

              If set, use 64 bit PGP key IDs. Unset uses the normal 32 bit Key
              IDs.  (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_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.  See also: “$pgp_mime_auto”.

              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.  See also: “$pgp_mime_auto”.

              Also  note  that  using  the  old-style  PGP  message  format is
              strongly deprecated.  (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_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_sort_keys
              Type: sort order
              Default: address

              Specifies how the entries in the ‘pgp keys’ 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_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_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_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-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*.rc  and
              gpg.rc  files  in  the  samples/  subdirectory  which  has  been
              installed on your  system  alongside  the  documentation.   (PGP
              only)

       pgp_getkeys_command
              Type: string
              Default: “”

              This  command  is  invoked  whenever  mutt  will need public key
              information.  %r is the only printf-like sequence used with this
              format.  (PGP only)

       pgp_verify_command
              Type: string
              Default: “”

              This command is used to verify PGP signatures.  (PGP only)

       pgp_decrypt_command
              Type: string
              Default: “”

              This  command  is used to decrypt a PGP encrypted message.  (PGP
              only)

       pgp_clearsign_command
              Type: string
              Default: “”

              This format is used to  create  a  old-style  ”clearsigned”  PGP
              message.    Note  that  the  use  of  this  format  is  strongly
              deprecated.  (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.  (PGP only)

       pgp_encrypt_sign_command
              Type: string
              Default: “”

              This command is used to both sign and encrypt a body part.  (PGP
              only)

       pgp_encrypt_only_command
              Type: string
              Default: “”

              This command is used to encrypt a body part without signing  it.
              (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.  (PGP only)

       pgp_export_command
              Type: string
              Default: “”

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

       pgp_verify_key_command
              Type: string
              Default: “”

              This  command  is  used  to  verify key information from the key
              selection menu.  (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.  (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.  (PGP only)

       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)

       smime_timeout
              Type: number
              Default: 300

              The  number  of  seconds  after  which  a cached passphrase will
              expire if not used.  (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_keys
              Type: path
              Default: “”

              Since there is no pubring/secring  as  with  PGP,  mutt  has  to
              handle  storage  ad  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 one
              points to the location of the private keys.  (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)

       smime_certificates
              Type: path
              Default: “”

              Since 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 one
              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-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_verify_command
              Type: string
              Default: “”

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

       smime_encrypt_command
              Type: string
              Default: “”

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

       smime_get_cert_command
              Type: string
              Default: “”

              This  command  is used to extract X509 certificates from a PKCS7
              structure.  (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.   (S/MIME
              only)

       smime_import_cert_command
              Type: string
              Default: “”

              This  command  is  used  to import a certificate via smime_keys.
              (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).  (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)

       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_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.

       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 are also automatically accepted.

              Example: set certificate_file=~/.mutt/certificates

       ssl_use_sslv3
              Type: boolean
              Default: yes

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

       ssl_use_tlsv1
              Type: boolean
              Default: yes

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

       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_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 are also automatically accepted.

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

       pipe_split
              Type: boolean
              Default: no

              Used  in  connection with the pipe-message command and the “tag-
              prefix” operator.  If this variable is unset, when piping a list
              of  tagged  messages Mutt will concatenate the messages and will
              pipe them as a single folder.  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.

       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 PGP/MIME 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.

       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   parameter  is  case-insensitive.  If  this
              parameter 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_auth_try_all
              Type: boolean
              Default: yes

              If  set,  Mutt  will try all available 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_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]

       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_reconnect
              Type: quadoption
              Default: ask-yes

              Controls whether or not Mutt will try to reconnect to 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.

       pop_pass
              Type: string
              Default: “”

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

       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.

       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:

              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 (like me).

       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.

       quit
              Type: quadoption
              Default: yes

              This  variable  controls whether “quit” and “exit” actually quit
              from mutt.  If it set to yes, they do quit, if it is set to  no,
              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.

              Note:  In  order  to  use  the  quotedx patterns in the internal
              pager, you need to set this to a regular expression that matches
              exactly the quote characters at the beginning of quoted lines.

       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.  The  message
              is  printed after read_inc messages have been read (e.g., if set
              to 25, Mutt will print a message when it reads message  25,  and
              then  again when it gets to message 50).  This variable is meant
              to indicate progress when reading 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” variable.

       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.  Also see “$postponed”.

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

       record
              Type: path
              Default: “”

              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.

       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 (like CompuServe  addresses).

       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.

       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  RFC-2047-encoded
              MIME  parameters.  You  want  to  set  this  variable  when mutt
              suggests you to save  attachments  to  files  named  like  this:
              =?iso-8859-1?Q?file=5F=E4=5F991116=2Ezip?=

              When this variable is set interactively, the change doesn’t have
              the desired effect before you have changed folders.

              Note that  this  use  of  RFC  2047’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 RFC 2231.

       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_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 friends 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.

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

              A  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”.

       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 “-- ” 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 stdout.

       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 ~ 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.  For the default value it would be:

              ~f joe | ~s joe

       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  in  the
              beginning of a line

       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.

       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).

       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: “,”

              “spam_separator”   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
              “spam_separator” 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  automatically  set this variable to the value of the
              environment variable $MAIL if it is not set.

       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()-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”

              * = 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.?

              Additionally  you can switch between two strings, the first one,
              if a value is zero, the second one, if the value is nonzero,  by
              using             the            following            construct:
              %?<sequence_char>?<if_string>&<else_string>?

              You  can  additionally  force  the  result  of  any  printf-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.

       strict_mime
              Type: boolean
              Default: yes

              When  unset,  non  MIME-compliant messages that doesn’t have any
              charset indication in “Content-Type” field can be displayed (non
              MIME-compliant  messages  are  often generated by old mailers or
              buggy   mailers   like   MS   Outlook   Express).    See    also
              $assumed_charset.

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

       strict_threads
              Type: boolean
              Default: no

              If set, threading will only make use of  the  “In-Reply-To”  and
              “References”  fields  when  you  “$sort” by message threads.  By
              default, messages with the same subject are grouped together  in
              “pseudo  threads.”. This may not always be desirable, such as in
              a personal  mailbox  where  you  might  have  several  unrelated
              messages  with the subject “hi” which will get grouped together.
              See also “$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 “control-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  text/plain;  format=flowed
              attachments.  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.

       thread_received
              Type: boolean
              Default: no

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

       thorough_search
              Type: boolean
              Default: no

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

       tilde
              Type: boolean
              Default: no

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

       timeout
              Type: number
              Default: 600

              This variable controls the number of seconds Mutt will wait  for
              a  key  to  be  pressed  in  the main menu before timing out and
              checking for new mail.  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 (default: space).  The second is  used
              when  you  are  the  only recipient of the message (default: +).
              The third is when your address appears in the TO  header  field,
              but  you are not the only recipient of the message (default: T).
              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 (default: L).

       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  server.
              Example:

              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.

       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 use “$envelope_from_address” as the envelope
              sender if that is set, otherwise it will attempt  to  derive  it
              from  the  ”From:” header.  Note that this information is passed
              to sendmail command using the ”-f” command line switch, so don’t
              set  this  option  if  you  are  using  that switch in $sendmail
              yourself, or if the sendmail on  your  machine  doesn’t  support
              that command line 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 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_search
              Type: boolean
              Default: yes

              Controls whether searches wrap around the end of the mailbox.

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

       wrapmargin
              Type: number
              Default: 0

              Controls  the  size of the margin remaining at the right side of
              the terminal when mutt’s pager does smart wrapping.

       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” variable.

       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.

       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’re in an appropriate terminal). The default must  be
              off to force in the validity checking.

       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.