Variable: rmail-summary-window-size
rmail-summary-window-size is a customizable variable defined in
rmail.el.gz.
Value
nil
Documentation
Non-nil means specify the height for an Rmail summary window.
Probably introduced at or before Emacs version 19.23.
Source Code
;; Defined in /usr/src/emacs/lisp/mail/rmail.el.gz
(defcustom rmail-summary-window-size nil
"Non-nil means specify the height for an Rmail summary window."
:type '(choice (const :tag "Disabled" nil) integer)
:group 'rmail-summary)