Variable: mail-signature-file
mail-signature-file is a customizable variable defined in
sendmail.el.gz.
Value
"~/.signature"
Documentation
File containing the text inserted at end of mail buffer.
Source Code
;; Defined in /usr/src/emacs/lisp/mail/sendmail.el.gz
;;;###autoload
(defcustom mail-signature-file (purecopy "~/.signature")
"File containing the text inserted at end of mail buffer."
:type 'file)