mh-signature-file-name

mh-signature-file-name is a variable defined in `mh-e.el'.
Its value is

"~/.signature"

Documentation:
*Source of user's signature.

By default, the text of your signature is taken from the file
"~/.signature". You can read from other sources by changing this
option. This file may contain a vCard in which case an attachment is
added with the vCard.

This option may also be a symbol, in which case that function is
called. You may not want a signature separator to be added for you;
instead you may want to insert one yourself. Options that you may find
useful to do this include `mh-signature-separator' (when inserting a
signature separator) and `mh-signature-separator-regexp' (for finding
said separator). The function `mh-signature-separator-p', which
reports t if the buffer contains a separator, may be useful as well.

The signature is inserted into your message with the command
C-c C-s or with the option
`mh-identity-list'.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 6.0 of the MH-E package that is part of Emacs 22.1.