When you choose a folder in MH-E via a command such as o
(mh-refile-msg), completion is used to enter the folder
(see the section
Completion in The GNU Emacs Manual).
In addition, MH-E has several ways of choosing a suitable default so
that the folder can often be selected with a single RET key.
The ‘mh-folder-selection’ customization group contains some options which are used to help with this.
mh-default-folder-for-message-function ¶Function to select a default folder for refiling or ‘Fcc:’
(default: nil).
mh-default-folder-list ¶List of addresses and folders (default: nil).
mh-default-folder-must-exist-flag ¶On means guessed folder name must exist to be used (default: ‘on’).
mh-default-folder-prefix ¶Prefix used for folder names generated from aliases (default: "").
You can set the option mh-default-folder-for-message-function
to a function that provides a default folder for the message to be
refiled. When this function is called, the current buffer contains the
message being refiled and point is at the start of the message. This
function should return the default folder as a string with a leading
‘+’ sign. It can also return nil so that the last folder
name is used as the default, or an empty string to suppress the
default entirely.
Otherwise, the name of the destination folder is derived from the sender as follows:
mh-default-folder-list is used. Each element in this list
contains a ‘Check Recipient’ item. If this item is turned on,
then the address is checked against the recipient instead of the
sender. This is useful for mailing lists.
mh-default-folder-prefix corresponding to
the address is used. The prefix is used to prevent clutter in your
mail directory. See Aliases.
If the derived folder does not exist, and
mh-default-folder-must-exist-flag is t, then the last
folder name used is suggested. This is useful if you get mail from
various people for whom you have an alias, but file them all in the
same project folder.