Variable: mail-bury-selects-summary
mail-bury-selects-summary is a customizable variable defined in
sendmail.el.gz.
Value
t
Documentation
If non-nil, try to show Rmail summary buffer after returning from mail.
The functions M-x mail-send-on-exit (mail-send-on-exit) or M-x mail-dont-send (mail-dont-send) select
the Rmail summary buffer before returning, if it exists and this variable
is non-nil.
Source Code
;; Defined in /usr/src/emacs/lisp/mail/sendmail.el.gz
(defcustom mail-bury-selects-summary t
"If non-nil, try to show Rmail summary buffer after returning from mail.
The functions \\[mail-send-on-exit] or \\[mail-dont-send] select
the Rmail summary buffer before returning, if it exists and this variable
is non-nil."
:type 'boolean)