Variable: mail-specify-envelope-from
mail-specify-envelope-from is a customizable variable defined in
sendmail.el.gz.
Value
nil
Documentation
If non-nil, specify the envelope-from address when sending mail.
The value used to specify it is whatever is found in
the variable mail-envelope-from(var)/mail-envelope-from(fun), with user-mail-address as fallback.
On most systems, specifying the envelope-from address is a
privileged operation. This variable affects sendmail and
smtpmail -- if you use feedmail to send mail, see instead the
variable feedmail-deduce-envelope-from.
This variable was added, or its default value changed, in Emacs 21.1.
Probably introduced at or before Emacs version 21.1.
Source Code
;; Defined in /usr/src/emacs/lisp/mail/sendmail.el.gz
;;;###autoload
(defcustom mail-specify-envelope-from nil
"If non-nil, specify the envelope-from address when sending mail.
The value used to specify it is whatever is found in
the variable `mail-envelope-from', with `user-mail-address' as fallback.
On most systems, specifying the envelope-from address is a
privileged operation. This variable affects sendmail and
smtpmail -- if you use feedmail to send mail, see instead the
variable `feedmail-deduce-envelope-from'."
:version "21.1"
:type 'boolean)