Variable: mail-hist-text-size-limit
mail-hist-text-size-limit is a customizable variable defined in
mail-hist.el.gz.
Value
nil
Documentation
Don't store any header or body with more than this many characters.
If the value is nil, that means no limit on text size.
Source Code
;; Defined in /usr/src/emacs/lisp/mail/mail-hist.el.gz
(defcustom mail-hist-text-size-limit nil
"Don't store any header or body with more than this many characters.
If the value is nil, that means no limit on text size."
:type '(choice (const nil) integer))