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6. Reference

6.1 Command line options

Running mutt with no arguments will make Mutt attempt to read your spool mailbox. However, it is possible to read other mailboxes and to send messages from the command line as well.

-a      attach a file to a message
-c      specify a carbon-copy (Cc) address
-e      specify a config command to be run after initilization files are read
-F      specify an alternate file to read initialization commands
-f      specify a mailbox to load
-h      print help on command line options
-H      specify a draft file from which to read a header and body
-i      specify a file to include in a message composition
-n      do not read the system Muttrc
-m      specify a default mailbox type
-p      recall a postponed message
-R      open mailbox in read-only mode
-s      specify a subject (enclose in quotes if it contains spaces)
-v      show version number and compile-time definitions
-x      simulate the mailx(1) compose mode
-y      show a menu containing the files specified by the mailboxes command
-z      exit immediately if there are no messages in the mailbox
-Z      open the first folder with new message,exit immediately if none

To read messages in a mailbox

mutt [ -nz ] [ -F muttrc ] [ -m type ] [ -f mailbox ]

To compose a new message

mutt [ -n ] [ -F muttrc ] [ -a file ] [ -c address ] [ -i filename ] [ -s subject ] address [ address ... ]

Mutt also supports a ``batch'' mode to send prepared messages. Simply redirect input from the file you wish to send. For example,

mutt -s "data set for run #2" professor@bigschool.edu < ~/run2.dat

This command will send a message to ``professor@bigschool.edu'' with a subject of ``data set for run #2''. In the body of the message will be the contents of the file ``~/run2.dat''.

6.2 Configuration Commands

The following are the commands understood by mutt.

6.3 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 %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
%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.

alternates

Type: regular expression
Default: ""

A regexp that allows you to specify alternate addresses where you receive mail. This affects Mutt's idea about messages from you and addressed to you.

arrow_cursor

Type: boolean
Default: no

When set, an arrow (``->'') will be used to indicate the current entry in menus instead of hiliting 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.

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:

%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
%s      size
%t      tagged flag
%u      unlink (=to delete) flag
%>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 escape sequences see the section on ``index_format''.

autoedit

Type: boolean
Default: no

When set, Mutt will skip the initial send-menu and allow you to immediately begin editing the body of your message when replying to another message. The send-menu may still be accessed once you have finished editing the body of your message.

If the ``edit_headers'' variable is also set, the initial prompts in the send-menu are always skipped, even when composing a new message.

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_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.

charset

Type: string
Default: "iso-8859-1"

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.

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.

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''.

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, 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.

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

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 EDITOR or VISUAL environment variable, or to "/usr/bin/editor".

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

Type: boolean
Default: no

When set, mutt will try to derive the message's envelope sender 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.

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.

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. 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_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''.

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.

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_checkinterval

Type: number
Default: 60

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

imap_force_ssl

Type: boolean
Default: no

If this variable is set, Mutt will always use SSL when connecting to IMAP servers.

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 command.

imap_user

Type: string
Default: ""

Your login name on the IMAP server.

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

imap_cramkey

Type: string
Default: ""

Sets your CRAM secret, for use with the CRAM-MD5 IMAP authentication method (this is the IMAP equivelent of APOP). This method will be attempted automatically if the server supports it, in preference to the less secure login technique. If you use CRAM-MD5, you do not need to set imap_pass.

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_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_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_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:

imap_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.

implicit_autoview

Type: boolean
Default: no

If set to ``yes'', mutt will look for a 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.

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.

in_reply_to

Type: string
Default: "%i; from %a on %{!%a, %b %d, %Y at %I:%M:%S%p %Z}"

This specifies the format of the In-Reply-To header field added when replying to a message. For a ful llisting of defined escape sequences, see the section on index_format.

Note: Don't use any sequences in this format string which may include 8-bit characters. Using such escape sequences may lead to bad headers.

index_format

Type: string
Default: "%4C %Z %{%b %d} %-15.15L (%4l) %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
%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
%f      entire From: line (address + real name)
%F      author name, or recipient name if the 
        message is from you
%i      message-id of the current message
%l      number of lines in the message
%L      list-from function
%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
%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 b_healean
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 EDITOR or VISUAL environment variable, or to "/usr/bin/editor".

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

Type: boolean
Default: no

When set, mutt will try to derive the message's envelope sender 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.

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.

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. 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_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''.

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.

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_checkinterval

Type: number
Default: 60

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

imap_force_ssl

Type: boolean
Default: no

If this variable is set, Mutt will always use SSL when connecting to IMAP servers.

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 command.

imap_user

Type: string
Default: ""

Your login name on the IMAP server.

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

imap_cramkey

Type: string
Default: ""

Sets your CRAM secret, for use with the CRAM-MD5 IMAP authentication method (this is the IMAP equivelent of APOP). This method will be attempted automatically if the server supports it, in preference to the less secure login technique. If you use CRAM-MD5, you do not need to set imap_pass.

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_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_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_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:

imap_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.

implicit_autoview

Type: boolean
Default: no

If set to ``yes'', mutt will look for a 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.

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.

in_reply_to

Type: string
Default: "%i; from %a on %{!%a, %b %d, %Y at %I:%M:%S%p %Z}"

This specifies the format of the In-Reply-To header field added when replying to a message. For a ful llisting of defined escape sequences, see the section on index_format.

Note: Don't use any sequences in this format string which may include 8-bit characters. Using such escape sequences may lead to bad headers.

index_format

Type: string
Default: "%4C %Z %{%b %d} %-15.15L (%4l) %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
%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
%f      entire From: line (address + real name)
%F      author name, or recipient name if the 
        message is from you
%i      message-id of the current message
%l      number of lines in the message
%L      list-from function
%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
%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 b_healean
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 EDITOR or VISUAL environment variable, or to "/usr/bin/editor".

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

Type: boolean
Default: no

When set, mutt will try to derive the message's envelope sender 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.

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.

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. 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_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''.

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.

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_checkinterval

Type: number
Default: 60

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

imap_force_ssl

Type: boolean
Default: no

If this variable is set, Mutt will always use SSL when connecting to IMAP servers.

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 command.

imap_user

Type: string
Default: ""

Your login name on the IMAP server.

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

imap_cramkey

Type: string
Default: ""

Sets your CRAM secret, for use with the CRAM-MD5 IMAP authentication method (this is the IMAP equivelent of APOP). This method will be attempted automatically if the server supports it, in preference to the less secure login technique. If you use CRAM-MD5, you do not need to set imap_pass.

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_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_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_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:

imap_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.

implicit_autoview

Type: boolean
Default: no

If set to ``yes'', mutt will look for a 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.

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.

in_reply_to

Type: string
Default: "%i; from %a on %{!%a, %b %d, %Y at %I:%M:%S%p %Z}"

This specifies the format of the In-Reply-To header field added when replying to a message. For a ful llisting of defined escape sequences, see the section on index_format.

Note: Don't use any sequences in this format string which may include 8-bit characters. Using such escape sequences may lead to bad headers.

index_format

Type: string
Default: "%4C %Z %{%b %d} %-15.15L (%4l) %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
%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
%f      entire From: line (address + real name)
%F      author name, or recipient name if the 
        message is from you
%i      message-id of the current message
%l      number of lines in the message
%L      list-from function
%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
%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 b_healean
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 EDITOR or VISUAL environment variable, or to "/usr/bin/editor".

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

Type: boolean
Default: no

When set, mutt will try to derive the message's envelope sender 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.

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.

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. 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_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''.

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.

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_checkinterval

Type: number
Default: 60

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

imap_force_ssl

Type: boolean
Default: no

If this variable is set, Mutt will always use SSL when connecting to IMAP servers.

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 command.

imap_user

Type: string
Default: ""

Your login name on the IMAP server.

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

imap_cramkey

Type: string
Default: ""

Sets your CRAM secret, for use with the CRAM-MD5 IMAP authentication method (this is the IMAP equivelent of APOP). This method will be attempted automatically if the server supports it, in preference to the less secure login technique. If you use CRAM-MD5, you do not need to set imap_pass.

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_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_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_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:

imap_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.

implicit_autoview

Type: boolean
Default: no

If set to ``yes'', mutt will look for a 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.

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.

in_reply_to

Type: string
Default: "%i; from %a on %{!%a, %b %d, %Y at %I:%M:%S%p %Z}"

This specifies the format of the In-Reply-To header field added when replying to a message. For a ful llisting of defined escape sequences, see the section on index_format.

Note: Don't use any sequences in this format string which may include 8-bit characters. Using such escape sequences may lead to bad headers.

index_format

Type: string
Default: "%4C %Z %{%b %d} %-15.15L (%4l) %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
%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
%f      entire From: line (address + real name)
%F      author name, or recipient name if the 
        message is from you
%i      message-id of the current message
%l      number of lines in the message
%L      list-from function
%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
%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 b_healean
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 EDITOR or VISUAL environment variable, or to "/usr/bin/editor".

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

Type: boolean
Default: no

When set, mutt will try to derive the message's envelope sender 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.

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.

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. 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_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''.

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.

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_checkinterval

Type: number
Default: 60

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

imap_force_ssl

Type: boolean
Default: no

If this variable is set, Mutt will always use SSL when connecting to IMAP servers.

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 command.

imap_user

Type: string
Default: ""

Your login name on the IMAP server.

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

imap_cramkey

Type: string
Default: ""

Sets your CRAM secret, for use with the CRAM-MD5 IMAP authentication method (this is the IMAP equivelent of APOP). This method will be attempted automatically if the server supports it, in preference to the less secure login technique. If you use CRAM-MD5, you do not need to set imap_pass.

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_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_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_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:

imap_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.

implicit_autoview

Type: boolean
Default: no

If set to ``yes'', mutt will look for a 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.

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.

in_reply_to

Type: string
Default: "%i; from %a on %{!%a, %b %d, %Y at %I:%M:%S%p %Z}"

This specifies the format of the In-Reply-To header field added when replying to a message. For a ful llisting of defined escape sequences, see the section on index_format.

Note: Don't use any sequences in this format string which may include 8-bit characters. Using such escape sequences may lead to bad headers.

index_format

Type: string
Default: "%4C %Z %{%b %d} %-15.15L (%4l) %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
%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
%f      entire From: line (address + real name)
%F      author name, or recipient name if the 
        message is from you
%i      message-id of the current message
%l      number of lines in the message
%L      list-from function
%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
%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 b_healean
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 EDITOR or VISUAL environment variable, or to "/usr/bin/editor".

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

Type: boolean
Default: no

When set, mutt will try to derive the message's envelope sender 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.

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.

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