Provided by: aerc_0.18.2-2_amd64 
NAME
aerc-config - configuration file format for aerc(1)
SYNOPSIS
There are three aerc config files: aerc.conf, binds.conf, and accounts.conf. The last one
must be kept secret, as it may include your account credentials. We look for these files
in your XDG config home plus aerc, which defaults to ~/.config/aerc. Alternate files can
be specified via command line arguments, see aerc(1).
Examples of these config files are typically included with your installation of aerc and
are usually installed in /usr/share/aerc.
Each file uses the ini format, and consists of sections with keys and values. A line
beginning with # is considered a comment and ignored, as are empty lines. New sections
begin with [section-name] on a single line, and keys and values are separated with =.
This manual page focuses on aerc.conf. binds.conf is detailed in aerc-binds(5) and
accounts.conf in aerc-accounts(5).
aerc.conf is used for configuring the general appearance and behavior of aerc.
GENERAL OPTIONS
These options are configured in the [general] section of aerc.conf.
default-save-path = <path>
Used as a default path for save operations if no other path is specified.
pgp-provider = auto|gpg|internal
If set to gpg, aerc will use system gpg binary and keystore for all crypto operations.
If set to internal, the internal openpgp keyring will be used. If set to auto, the
system gpg will be preferred unless the internal keyring already exists, in which case
the latter will be used.
Default: auto
unsafe-accounts-conf = true|false
By default, the file permissions of accounts.conf must be restrictive and only allow
reading by the file owner (0600). Set this option to true to ignore this permission
check. Use this with care as it may expose your credentials.
Default: false
log-file = <path>
Output log messages to specified file. A path starting with ~/ is expanded to the user
home dir. When redirecting aerc's output to a file using > shell redirection, this
setting is ignored and log messages are printed to stdout.
log-level = trace|debug|info|warn|error
Only log messages above the specified level to log-file. Supported levels are: trace,
debug, info, warn and error. When redirecting aerc's output to a file using > shell
redirection, this setting is ignored and the log level is forced to trace.
Default: info
disable-ipc = true|false
Disable IPC entirely. Don't run commands (including mailto:... and mbox...) in an
existing aerc instance and don't start an IPC server to allow subsequent aerc
instances to run commands in the current one.
Default: false
disable-ipc-mailto = true | false
Don't run mailto:... commands over IPC; start a new aerc instance with the composer
instead.
Default: false
disable-ipc-mbox = true | false
Don't run mbox:... commands over IPC; start a new aerc instance with the mbox file
instead.
Default: false
term = <TERM>
Set the $TERM environment variable used for the embedded terminal.
Default: xterm-256color
enable-osc8 = true|false
Enable the embedded terminal to output OSC 8 (hyperlinks) escape sequences. Not all
terminal emulators handle OSC 8 sequences properly and can produce confusing results,
disable this setting if that occurs.
Default: false
default-menu-cmd = <cmd>
Default shell command to use for :menu. This will be executed with sh -c and will run
in an popover dialog.
Any occurrence of %f will be replaced by a temporary file path where the command is
expected to write output lines to be consumed by :menu. Otherwise, the lines will be
read from the command's standard output.
Example:
default-menu-cmd = fzf
UI OPTIONS
These options are configured in the [ui] section of aerc.conf.
index-columns = <column1,column2,column3...>
Describes the format for each row in a mailbox view. This is a comma separated list of
column names with an optional align and width suffix. After the column name, one of
the < (left), : (center) or > (right) alignment characters can be added (by default,
left) followed by an optional width specifier. The width is either an integer
representing a fixed number of characters, or a percentage between 1% and 99%
representing a fraction of the terminal width. It can also be one of the * (auto) or =
(fit) special width specifiers. Auto width columns will be equally attributed the
remaining terminal width. Fit width columns take the width of their contents. If no
width specifier is set, * is used by default.
Default: flags:4,name<20%,subject,date>=
column-separator = "<separator>"
String separator inserted between columns. When a column width specifier is an exact
number of characters, the separator is added to it (i.e. the exact width will be fully
available for that column contents).
Default: " "
column-<name> = <go template>
Each name in index-columns must have a corresponding column-<name> setting. All
column-<name> settings accept golang text/template syntax.
By default, these columns are defined:
column-flags = {{.Flags | join ""}}
column-name = {{index (.From | names) 0}}
column-subject = {{.ThreadPrefix}}{{.Subject}}
column-date = {{.DateAutoFormat .Date.Local}}
See aerc-templates(7) for all available symbols and functions.
timestamp-format = <timeformat>
See time.Time#Format at https://godoc.org/time#Time.Format
Default: 2006 Jan 02
this-day-time-format = <timeformat>
Index-only time format for messages that were received/sent today. If this is empty,
timestamp-format is used instead.
Default: 15:04
this-week-time-format = <timeformat>
Index-only time format for messages that were received/sent within the last 7 days. If
this is empty, timestamp-format is used instead.
Default: Jan 02
this-year-time-format = <timeformat>
Index-only time format for messages that were received/sent this year. If this is
empty, timestamp-format is used instead.
Default: Jan 02
message-view-timestamp-format = <timeformat>
If set, overrides timestamp-format for the message view.
Default: 2006 Jan 02, 15:04 GMT-0700
message-view-this-day-time-format = <timeformat>
If set, overrides timestamp-format in the message view for messages that were
received/sent today.
message-view-this-week-time-format = <timeformat>
If set, overrides timestamp-format in the message view for messages that were
recieved/sent within the last 7 days.
message-view-this-year-time-format = <timeformat>
If set, overrides timestamp-format in the message view for messages that were
received/sent this year.
sidebar-width = <int>
Width of the sidebar, including the border. Set to zero to disable the sidebar.
Default: 22
message-list-split = [<direction>] <size>
The default split layout for message list tabs.
<direction> is optional and defaults to horizontal. It can take one of the following
values: h, horiz, horizontal, v, vert, vertical.
<size> is a positive integer representing the size (in terminal cells) of the message
list window.
See :split in aerc(1) for more details.
empty-message = <string>
Message to display when viewing an empty folder.
Default: (no messages)
empty-dirlist = <string>
Message to display when no folders exists or are all filtered.
Default: (no folders)
empty-subject = <string>
Text to display in message list, when the subject is empty.
Default: (no subject)
mouse-enabled = true|false
Enable mouse events in the ui, e.g. clicking and scrolling with the mousewheel
Default: false
new-message-bell = true|false
Ring the bell when a new message is received.
Default: true
tab-title-account = <go_template>
The template to use for account tab titles. See aerc-templates(7) for available field
names. To conditionally show the unread count next to the account name, set to:
tab-title-account = {{.Account}} {{if .Unread}}({{.Unread}}){{end}}
Default: {{.Account}}
tab-title-composer = <go_template>
The template to use for composer tab titles. See aerc-templates(7) for available field
names.
Default: {{if .To}}to:{{index (.To | shortmboxes) 0}} {{end}}{{.SubjectBase}}
tab-title-viewer = <go_template>
The template to use for viewer tab titles. See aerc-templates(7) for available field
names.
Default: {{.Subject}}
pinned-tab-marker = "<string>"
Marker to show before a pinned tab's name.
Default: `
spinner = "<string>"
Animation shown while loading, split by spinner-delimiter (below)
Examples:
• spinner = "-_-,_-_"
• spinner = '. , .'
• spinner = ",|,/,-"
Default: "[..] , [..] , [..] , [..] , [..], [..] , [..] , [..] "
spinner-delimiter = <string>
Spinner delimiter to split string into an animation
Default: ,
spinner-interval = <duration>
The delay between each spinner frame
Default: 200ms
sort = <criteria>
List of space-separated criteria to sort the messages by, see :sort command in aerc(1)
for reference. Prefixing a criterion with -r reverses that criterion.
Example:
sort = from -r date
dirlist-left = <go template>
Template for the left side of the directory list. See aerc-templates(7) for all
available fields and functions.
Default: {{.Folder}}
dirlist-right = <go template>
Template for the right side of the directory list. See aerc-templates(7) for all
available fields and functions.
Default: {{if .Unread}}{{humanReadable .Unread}}{{end}}
dirlist-delay = <duration>
Delay after which the messages are actually listed when entering a directory. This
avoids loading messages when skipping over folders and makes the UI more responsive.
If you do not want that, set it to 0s.
Default: 200ms
dirlist-tree = true|false
Display the directory list as a foldable tree.
Default: false
dirlist-collapse = <int>
If dirlist-tree is enabled, set level at which folders are collapsed by default. Set
to 0 to disable.
Default: 0
next-message-on-delete = true|false
Moves to next message when the current message is deleted, archived, or moved.
Default: true
auto-mark-read = true|false
Set the seen flag when a message is opened in the message viewer.
Default: true
completion-popovers = true|false
Shows potential auto-completions for text inputs in popovers.
Default: true
completion-delay = <duration>
How long to wait after the last input before auto-completion is triggered.
Default: 250ms
completion-min-chars = <int>
The minimum required characters to allow auto-completion to be triggered after
completion-delay.
Setting this to manual disables automatic completion, leaving only the manually
triggered completion with the $complete key (see aerc-binds(5) for more details).
Default: 1
border-char-vertical = "<char>"
border-char-horizontal = "<char>"
Set stylable characters (via the border element) for vertical and horizontal borders.
Default: " "
stylesets-dirs = <path1:path2:path3...>
The directories where the stylesets are stored. The config takes a colon-separated
list of dirs. If this is unset or if a styleset cannot be found, the following paths
will be used as a fallback in that order:
${XDG_CONFIG_HOME:-~/.config}/aerc/stylesets
${XDG_DATA_HOME:-~/.local/share}/aerc/stylesets
/usr/local/share/aerc/stylesets
/usr/share/aerc/stylesets
styleset-name = <string>
The name of the styleset to be used to style the ui elements. The stylesets are stored
in the stylesets directory in the config directory.
Default: default
Have a look at aerc-stylesets(7) as to how a styleset looks like.
icon-unencrypted = <string>
The icon to display for unencrypted mails. The status indicator is only displayed if
an icon is set.
icon-encrypted = <string>
The icon to display for encrypted mails.
Default: [e]
icon-signed = <string>
The icon to display for signed mails where the signature was successfully validated.
Default: [s]
icon-signed-encrypted = <string>
The icon to display for signed and encrypted mails where the signature was
successfully verified. The combined icon is only used if set, otherwise the signed and
encrypted icons are displayed separately.
icon-unknown = <string>
The icon to display for signed mails which could not be verified due to the key being
unknown.
Default: [s?]
icon-invalid = <string>
The icon to display for signed mails where verification failed.
Default: [s!]
icon-attachment = <string>
The icon to display in column-flags when the message has an attachment.
Default: a
icon-new = <string>
The icon to display in column-flags when the message is unread and new.
Default: N
icon-old = <string>
The icon to display in column-flags when the message is unread and old.
Default: O
icon-replied = <string>
The icon to display in column-flags when the message has been replied to.
Default: r
icon-flagged = <string>
The icon to display in column-flags when the message is flagged.
Default: !
icon-marked = <string>
The icon to display in column-flags when the message is marked.
Default: *
icon-draft = <string>
The icon to display in column-flags when the message is a draft.
Default: d
icon-deleted = <string>
The icon to display in column-flags when the message has been deleted.
Default: X
fuzzy-complete = true|false
When typing a command or option, the popover will now show not only the items
/starting/ with the string input by the user, but it will also show instances of items
/containing/ the string, starting at any position and need not be consecutive
characters in the command or option.
reverse-msglist-order = true|false
Reverses the order of the message list. By default, the message list is ordered with
the newest (highest UID) message on top. Reversing the order will put the oldest
(lowest UID) message on top. This can be useful in cases where the backend does not
support sorting.
Default: false
reverse-thread-order = true|false
Reverse display of the message threads. By default, the thread root is displayed at
the top of the tree with all replies below. The reverse option will put the thread
root at the bottom with replies on top.
Default: false
select-last-message = true|false
Positions the cursor on the last message in the message list (at the bottom of the
view) when opening a new folder.
Default: false
sort-thread-siblings = true|false
Sort the thread siblings according to the sort criteria for the messages. If sort-
thread-siblings is false, the thread siblings will be sorted based on the message UID.
This option is only applicable for client-side threading with a backend that enables
sorting.
Default: false
threading-enabled = true|false
Enable a threaded view of messages. If this is not supported by the backend (IMAP
server or notmuch), threads will be built by the client.
Default: false
force-client-threads = true|false
Force threads to be built client-side. Backends that don't support threading will
always build threads client side.
Default: false
threading-by-subject = true|false
If no References nor In-Reply-To headers can be matched to build client side threads,
fallback to similar subjects.
Default: false
client-threads-delay = <duration>
Delay of inactivity after which the client threads are rebuilt. Setting this to 0s may
introduce a noticeable lag when scrolling through the message list.
Default: 50ms
show-thread-context = true|false
Enable showing of thread context. Note: this is not supported by all backends.
Default: false
msglist-scroll-offset = <int>
Set the scroll offset in number of lines from the top and bottom of the message list.
Default: 0
dialog-position = top|center|bottom
Set the position of popover dialogs such as the one from :menu, :envelope or :attach
-m.
Default: center
dialog-width = <width>
Set the width of popover dialogs as a percentage of the total width of the window. The
specified value should be between 10% and 100%.
Default: 50
dialog-height = <height>
Set the height of popover dialogs as a percentage of the total height of the window.
The specified value should be between 10% and 100%.
Default: 50
THREAD PREFIX CUSTOMIZATION
You can fully customize the thread arrows appearance, which is defined by the following
configurable prefix parts:
thread-prefix-tip = <string>
Define the arrow head.
Default: ">"
thread-prefix-indent = <string>
Define the arrow indentation.
Default: " "
thread-prefix-stem = <string>
Define the vertical extension of the arrow.
Default: "│"
thread-prefix-limb = <string>
Define the horizontal extension of the arrow.
Default: ""
thread-prefix-folded = <string>
Define the folded thread indicator.
Default: "+"
thread-prefix-unfolded = <string>
Define the unfolded thread indicator.
Default: ""
thread-prefix-first-child = <string>
Define the first child connector.
Default: ""
thread-prefix-has-siblings = <string>
Define the connector used if the message has siblings.
Default: ├─
thread-prefix-lone = <string>
Define the connector used if the message has no parents and no children.
Default: ""
thread-prefix-orphan = <string>
Define the connector used if the message has no parents and has children.
Default: ""
thread-prefix-last-sibling = <string>
Define the connector for the last sibling.
Default: └─
thread-prefix-last-sibling-reverse = <string>
Define the connector for the last sibling in reversed threads.
Default: ┌─
thread-prefix-dummy = <string>
Define the connector for the dummy head.
Default: ┬─
thread-prefix-dummy-reverse = <string>
Define the connector for the dummy head in reversed threads.
Default: ┴─
thread-prefix-first-child-reverse = <string>
Define the arrow appearance by selecting the first child connector in reversed
threads.
Default: ""
thread-prefix-orphan-reverse = <string>
Customize the reversed threads arrow appearance by selecting the connector used if the
message has no parents and has children.
Default: ""
Default settings (mutt-style):
[PATCH aerc v5] ui: allow thread arrow customisation
├─>[aerc/patches] build success
├─>Re: [PATCH aerc v5] ui: allow thread arrow customisation
├─+
└─>
├─>
│ ├─>
│ └─>
│ └─>
└─>
More compact, rounded threads that are also fold-aware:
┌[PATCH aerc v5] ui: allow thread arrow customisation
├─[aerc/patches] build success
├─Re: [PATCH aerc v5] ui: allow thread arrow customisation
├+
╰┬
├┬
│├─
│╰┬
│ ╰─
╰─
thread-prefix-tip = ""
thread-prefix-indent = ""
thread-prefix-stem = "│"
thread-prefix-limb = "─"
thread-prefix-folded = "+"
thread-prefix-unfolded = ""
thread-prefix-first-child = "┬"
thread-prefix-has-siblings = "├"
thread-prefix-orphan = "┌"
thread-prefix-dummy = "┬"
thread-prefix-lone = " "
thread-prefix-last-sibling = "╰"
CONTEXTUAL UI CONFIGURATION
The UI configuration can be specialized for accounts, specific mail directories and
message subjects. The specializations are added using contextual config sections based on
the context.
The contextual UI configuration is merged to the base UiConfig in the following order:
Base UIConfig > Account Context > Folder Context.
[ui:account=AccountName]
Adds account specific configuration with the account name.
[ui:folder=FolderName]
Add folder specific configuration with the folder name.
[ui:folder~Regex]
Add folder specific configuration for folders whose names match the regular
expression.
Example:
[ui:account=Work]
sidebar-width=...
[ui:folder=Sent]
index-format=...
[ui:folder~Archive/d+/.*]
index-format=...
STATUSLINE
These options are configured in the [statusline] section of aerc.conf.
status-columns = <column1,column2,column3...>
Describes the format for the statusline. This is a comma separated list of column
names with an optional align and width suffix. See [ui].index-columns for more
details.
To completely mute the statusline (except for push notifications), explicitly set
status-columns to an empty string:
status-columns=
Default: left<*,center>=,right>*
column-separator = "<separator>"
String separator inserted between columns. See [ui].column-separator for more details.
Default: " "
column-<name> = <go template>
Each name in status-columns must have a corresponding column-<name> setting. All
column-<name> settings accept golang text/template syntax.
By default, these columns are defined:
column-left = [{{.Account}}] {{.StatusInfo}}
column-center = {{.PendingKeys}}
column-right = {{.TrayInfo}} | {{cwd}}
See aerc-templates(7) for all available symbols and functions.
separator = "<string>"
Specifies the separator between grouped statusline elements (e.g. for the
{{.ContentInfo}}, {{.TrayInfo}} and {{.StatusInfo}} in column-<name>).
Default: " | "
display-mode = text|icon
Defines the mode for displaying the status elements.
Default: text
VIEWER
These options are configured in the [viewer] section of aerc.conf.
pager = <command>
Specifies the pager to use when displaying emails. Note that some filters may add ANSI
escape sequences to add color to rendered emails, so you may want to use a pager which
supports ANSI.
Default: less -Rc
alternatives = <mime,types>
If an email offers several versions (multipart), you can configure which mimetype to
prefer. For example, this can be used to prefer plaintext over HTML emails.
Default: text/plain,text/html
header-layout = <header|layout,list...>
Defines the default headers to display when viewing a message. To display multiple
headers in the same row, separate them with a pipe, e.g. From|To. Rows will be hidden
if none of their specified headers are present in the message.
Notmuch tags can be displayed by adding Labels.
Authentication information from the Authentication-Results header can be displayed by
adding DKIM, SPF or DMARC. To show more information than just the authentication
result, append a plus sign (+) to the header name (e.g. DKIM+).
Default: From|To,Cc|Bcc,Date,Subject
show-headers = true|false
Default setting to determine whether to show full headers or only parsed ones in
message viewer.
Default: false
always-show-mime = true|false
Whether to always show the mimetype of an email, even when it is just a single part.
Default: false
max-mime-height = height
Define the maximum height of the mimetype switcher before a scrollbar is used. The
height of the mimetype switcher is restricted to half of the display height. If the
provided value for the height is zero, the number of parts will be used as the height
of the type switcher.
Default: 0
parse-http-links = true|false
Parses and extracts http links when viewing a message. Links can then be accessed with
the open-link command.
Default: true
COMPOSE
These options are configured in the [compose] section of aerc.conf.
editor = <command>
Specifies the command to run the editor with. It will be shown in an embedded
terminal, though it may also launch a graphical window if the environment supports it.
The following variables are defined in the editor's environment:
AERC_ACCOUNT
the name of the current account
AERC_ADDRESS_BOOK_CMD
the address-book-cmd specified for the current account in accounts.conf
Defaults to $EDITOR, or vi(1).
header-layout = <header|layout,list...>
Defines the default headers to display when composing a message. To display multiple
headers in the same row, separate them with a pipe, e.g. To|From.
Default: To|From,Subject
edit-headers = true|false
Edit headers directly into the text editor instead of having separate UI text inputs.
When this is set to true, the :cc, :bcc and :header commands do not work, editing
email headers are left to the text editor. address-book-cmd is not supported and
address completion is left to the editor itself. header-layout is ignored.
Default: false
address-book-cmd = <command>
Specifies the command to be used to tab-complete email addresses. Any occurrence of %s
in the address-book-cmd will be replaced with anything the user has typed after the
last comma.
The command must output the completions to standard output, one completion per line.
Each line must be tab-delimited, with an email address occurring as the first field.
Only the email address field is required. The second field, if present, will be
treated as the contact name. Additional fields are ignored.
This parameter can also be set per account in accounts.conf.
Example with carddav-query(1):
address-book-cmd = carddav-query %s
Example with khard(1):
address-book-cmd = khard email --remove-first-line --parsable %s
file-picker-cmd = <command>
Specifies the command to be used to select attachments. Any occurrence of %s in the
file-picker-cmd will be replaced with the argument <arg> to :attach -m <arg>. Any
occurence of %f will be replaced by the location of a temporary file, from which aerc
will read the selected files.
If %f is not present, the command must output the selected files to standard output,
one file per line. If it is present, then aerc does not capture the standard output
and instead reads the files from the temporary file which should have the same format.
Examples:
file-picker-cmd = fzf --multi --query=%s file-picker-cmd = ranger --choose-
files=%f
reply-to-self = true|false
If set to false, do not mail yourself when replying (e.g., if replying to emails
previously sent by yourself, address your replies to the original To and Cc).
Default: true
empty-subject-warning = true|false
Warn before sending an email with an empty subject.
Default: false
no-attachment-warning = <regexp>
Specifies a regular expression against which an email's body should be tested before
sending an email with no attachment. If the regexp matches, aerc will warn you before
sending the message. Leave empty to disable this feature.
Uses Go's regexp syntax, documented at https://golang.org/s/re2syntax. The (?im) flags
are set by default (case-insensitive and multi-line).
Example:
no-attachment-warning = ^[^>]*attach(ed|ment)
format-flowed = true|false
When set, aerc will generate Format=Flowed bodies with a content type of "text/plain;
Format=Flowed" as described in RFC3676. 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.
Default: false
lf-editor = true|false
By default, aerc will use RFC2822 standard \r\n (CRLF) line breaks when composing
messages. Use this option for text editors that only support non-standard \n (LF) line
breaks.
Default: false
MULTIPART CONVERTERS
Converters allow generating multipart/alternative messages by converting the main
text/plain body into any other text MIME type with the :multipart command. Only exact MIME
types are accepted. The commands are invoked with sh -c and are expected to output valid
UTF-8 text.
Only text/<subtype> MIME parts can be generated. The text/plain MIME type is reserved and
cannot be generated. You still need to write your emails by hand in your favorite text
editor.
Converters are configured in the [multipart-converters] section of aerc.conf.
Example:
[multipart-converters]
text/html=pandoc -f markdown -t html --standalone
Obviously, this requires that you write your main text/plain body using the markdown
syntax. Also, mind that some mailing lists reject emails that contain text/html
alternative parts. Use this feature carefully and when possible, avoid using it at all.
FILTERS
Filters are a flexible and powerful way of handling viewing parts of an opened message.
When viewing messages aerc will show the list of available message parts and their MIME
type at the bottom, but unless a filter is defined for a specific MIME type, it will only
show a menu with a few options (allowing you to open the part in an external program, save
it to disk or pipe it to a shell command). Configuring a filter will allow viewing the
output of the filter in the configured pager in aerc's built-in terminal.
Filters are configured in the [filters] section of aerc.conf. The first filter which
matches the part's MIME type will be used, so order them from most to least specific. You
can also match on non-MIME types, by prefixing with the header to match against (non-case-
sensitive) and a comma, e.g. subject,text will match a subject which contains text. Use
header,~regex to match against a regex. Using .filename instead of a header will match
against the filename of an attachment.
Note that aerc will pipe the content into the configured filter program, so filters need
to be able to read from standard input. Many programs support reading from stdin by
putting - instead of a path to a file. You can also chain together multiple filters by
piping with |.
aerc ships with some default filters installed in the libexec directory (usually
/usr/libexec/aerc/filters). Note that these may have additional dependencies that aerc
does not have alone.
The filter commands are invoked with sh -c command. The following folders are prepended to
the system $PATH to allow referencing filters from their name only.
${XDG_CONFIG_HOME:-~/.config}/aerc/filters
~/.local/libexec/aerc/filters
${XDG_DATA_HOME:-~/.local/share}/aerc/filters
$PREFIX/libexec/aerc/filters
$PREFIX/share/aerc/filters
/usr/libexec/aerc/filters
/usr/share/aerc/filters
If you want to run a program in your default $PATH which has the same name as a builtin
filter (e.g. /usr/bin/colorize), use its absolute path.
The following variables are defined in the filter command environment:
AERC_MIME_TYPE
the part MIME type/subtype
AERC_FORMAT
the part content type format= parameter (e.g. format=flowed)
AERC_FILENAME
the attachment filename (if any)
AERC_SUBJECT
the message Subject header value
AERC_FROM
the message From header value
Note that said email body is converted into UTF-8 before being passed to filters.
If show-headers is enabled, only the currently viewed part body is piped into the filter
command. A special .headers filter command can be defined to post process the full
headers.
EXAMPLES
text/plain
Color some things, e.g. quotes, git diffs, links, etc.:
text/plain=colorize
The built-in colorize filter can be configured in the [viewer] section of styleset
files. See aerc-stylesets(7).
Wrap long lines at 100 characters, while not messing up nested quotes. Handles
format=flowed emails properly:
text/plain=wrap -w 100 | colorize
from,<sender>
Another example of hard wrapping lines of emails sent by a specific person. Explicitly
reflow all paragraphs instead of only wrapping long lines. This may break manual
formatting in some messages:
from,thatguywhoneverhardwrapshismessages=wrap -r -w 72 | colorize
subject,~<regexp>
Use rainbow coloring with lolcat(1) for emails sent by software forges:
subject,~Git(hub|lab)=lolcat -f
text/html
Render html to a more human readable version and colorize:
text/html=html | colorize
Use pandoc to output plain text:
text/html=pandoc -f html -t plain
text/calendar
Parse calendar invites:
text/calendar=calendar
text/*
Catch any other type of text that did not have a specific filter and use bat(1) to
color these:
text/*=bat -fP --file-name="$AERC_FILENAME" --style=plain
.headers
Colorize email headers when show-headers is true.
.headers=colorize
message/delivery-status
When not being able to deliver the provider might send such emails:
message/delivery-status=colorize
message/rfc822
When getting emails as attachments, e.g. on some mailing lists digest format is
sending an email with all the digest emails as attachments. Requires caeml(1) to be on
PATH:
message/rfc822=caeml | colorize
https://github.com/ferdinandyb/caeml
application/mbox
Emails as attachments in the mbox format. For example aerc can also create an mbox
from messages with the :pipe command. Requires catbox(1) and caeml(1) to be on PATH:
application/mbox=catbox -c caeml | colorize
https://github.com/konimarti/catbox
application/pdf
Render pdf to text and rewrap at 100 character width. Requires pdftotext(1) to be on
PATH:
application/pdf=pdftotext - -l 10 -nopgbrk -q - | fmt -w 100
https://www.xpdfreader.com/pdftotext-man.html
image/*
This is a tricky topic. It's possible to display images in a terminal, but for high
resolution images the terminal you are using either needs to support sixels or the
kitty terminal graphics protocol. The built-in terminal emulator of aerc (via the TUI
library Vaxis) supports both. Furthermore if you don't set any filter for images,
Vaxis will figure out what your terminal emulator supports and either use sixels,
kitty graphics, or fall back to a pixelated half-block. You can turn this feature off,
by setting a filter that is essentially no-op.
You can still set a specific filter, e.g catimg(1):
image/*=catimg -w$(tput cols) -
.filename,~<regexp>
Match <regexp> against the filename of an attachment, e.g. to split csv-s into
columns:
.filename,~.*.csv=column -t --separator=","
See the wiki at https://man.sr.ht/~rjarry/aerc/ for more examples and possible
customizations of the built-in filters.
OPENERS
Openers allow you to specify the command to use for the :open and :open-link actions on a
per-MIME-type basis. The :open-link URL scheme is used to determine the MIME type as
follows: x-scheme-handler/<scheme>. They are configured in the [openers] section of
aerc.conf.
{} is expanded as the temporary filename or URL to be opened with proper shell quoting. If
it is not encountered in the command, the filename/URL will be appended to the end of the
command. The command will then be executed with sh -c.
Like [filters], openers support basic shell globbing. The first opener which matches the
part's MIME type (or URL scheme handler MIME type) will be used, so order them from most
to least specific.
Example:
[openers]
x-scheme-handler/irc=hexchat
x-scheme-handler/http*=printf '%s' {} | wl-copy
text/html=surf -dfgms
text/plain=gvim {} +125
message/rfc822=thunderbird
HOOKS
Hooks are triggered whenever the associated event occurs. The commands are run in a shell
environment with information added to environment variables.
They are configured in the [hooks] section of aerc.conf.
aerc-startup = <command>
Executed when aerc is started is received in the selected folder. If it is used to run
certain commands at startup. The hook is executed as soon as the UI is initialized and
does not wait for all accounts to be fully loaded.
Variables:
• AERC_VERSION
• AERC_BINARY
Example:
aerc-startup = aerc :terminal calcurse && aerc :next-tab
mail-received = <command>
Executed when new mail is received in the selected folder. This will only work
reliably with maildir and some imap servers.
Variables:
• AERC_ACCOUNT
• AERC_ACCOUNT_BACKEND
• AERC_FOLDER
• AERC_FOLDER_ROLE
• AERC_FROM_NAME
• AERC_FROM_ADDRESS
• AERC_SUBJECT
• AERC_MESSAGE_ID
Example:
mail-received = notify-send "[$AERC_ACCOUNT/$AERC_FOLDER] New mail from
$AERC_FROM_NAME" "$AERC_SUBJECT"
mail-deleted = <command>
Executed when a message is deleted from a folder. Note that this hook is triggered
when moving a message from one folder to another.
Variables:
• AERC_ACCOUNT
• AERC_ACCOUNT_BACKEND
• AERC_FOLDER
• AERC_FOLDER_ROLE
Example:
mail-deleted = mbsync "$AERC_ACCOUNT:$AERC_FOLDER"
mail-added = <command>
Executed when a message is added to a folder. Note that this hook is not triggered
when a new message is received (use mail-received for that) but rather is only
triggered when aerc itself adds a message to a folder, e.g. when moving or copying a
message.
Variables:
• AERC_ACCOUNT
• AERC_ACCOUNT_BACKEND
• AERC_FOLDER
• AERC_FOLDER_ROLE
Example:
mail-added = mbsync "$AERC_ACCOUNT:$AERC_FOLDER"
mail-sent = <command>
Executed when a message is sent. This does not necessarily signify successful posting,
if a queueing system like msmtpq is used.
Variables:
• AERC_ACCOUNT
• AERC_ACCOUNT_BACKEND
• AERC_FROM_NAME
• AERC_FROM_ADDRESS
• AERC_SUBJECT
• AERC_TO
• AERC_CC
Example:
mail-sent = if [ "$AERC_ACCOUNT" = "gmail" ]; then mbsync gmail; fi
aerc-shutdown = <command>
Executed when aerc shuts down. Aerc will wait for the command to finish before
exiting.
Variables:
• AERC_LIFETIME
tag-modified = <command>
Executed when notmuch tags are modified in a notmuch account. The list of added and
removed tags are passed as variables.
Variables:
• AERC_ACCOUNT
• AERC_ACCOUNT_BACKEND
• AERC_TAG_ADDED
• AERC_TAG_REMOVED
flag-changed = <command>
Executed when flags are changed on a message.
Variables:
• AERC_ACCOUNT
• AERC_ACCOUNT_BACKEND
• AERC_FOLDER
• AERC_FOLDER_ROLE
• AERC_FLAG
Example:
flag-changed = mbsync "$AERC_ACCOUNT:$AERC_FOLDER"
TEMPLATES
Template files are used to populate the body of an email. The :compose, :reply and
:forward commands can be called with the -T flag with the name of the template name. The
available symbols and functions are described in aerc-templates(7).
aerc ships with some default templates installed in the share directory (usually
/usr/share/aerc/templates).
These options are configured in the [templates] section of aerc.conf.
template-dirs = <path1:path2:path3...>
The directory where the templates are stored. The config takes a colon-separated list
of dirs. If this is unset or if a template cannot be found, the following paths will
be used as a fallback in that order:
${XDG_CONFIG_HOME:-~/.config}/aerc/templates
${XDG_DATA_HOME:-~/.local/share}/aerc/templates
/usr/local/share/aerc/templates
/usr/share/aerc/templates
new-message = <template_name>
The default template to be used for new messages.
Default: new_message
quoted-reply = <template_name>
The default template to be used for quoted replies.
Default: quoted_reply
forwards = <template_name>
The default template to be used for forward as body.
Default: forward_as_body
SEE ALSO
aerc(1) aerc-accounts(5) aerc-binds(5) aerc-imap(5) aerc-jmap(5) aerc-maildir(5) aerc-
notmuch(5) aerc-templates(7) aerc-sendmail(5) aerc-smtp(5) aerc-stylesets(7) carddav-
query(1)
AUTHORS
Originally created by Drew DeVault and maintained by Robin Jarry who is assisted by other
open source contributors. For more information about aerc development, see
https://sr.ht/~rjarry/aerc/.
2024-08-26 AERC-CONFIG(5)