Variable: message-header-hook
message-header-hook is a customizable variable defined in
message.el.gz.
Value
nil
Documentation
Hook run in a message mode buffer narrowed to the headers.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/message.el.gz
(defcustom message-header-hook nil
"Hook run in a message mode buffer narrowed to the headers."
:group 'message-various
:type 'hook)