Variable: mail-source-delete-incoming
mail-source-delete-incoming is a customizable variable defined in
mail-source.el.gz.
Value
10
Documentation
If non-nil, delete incoming files after handling.
If t, delete immediately, if nil, never delete. If a positive number, delete files older than number of days.
Removing of old files happens in mail-source-callback, i.e. no
old incoming files will be deleted unless you receive new mail.
You may also set this variable to nil and call
mail-source-delete-old-incoming interactively.
This variable was added, or its default value changed, in Emacs 22.2.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/mail-source.el.gz
(defcustom mail-source-delete-incoming
10 ;; development versions
;; 2 ;; released versions
"If non-nil, delete incoming files after handling.
If t, delete immediately, if nil, never delete. If a positive number, delete
files older than number of days.
Removing of old files happens in `mail-source-callback', i.e. no
old incoming files will be deleted unless you receive new mail.
You may also set this variable to nil and call
`mail-source-delete-old-incoming' interactively."
:version "22.2" ;; No Gnus / Gnus 5.10.10 (default changed)
:type '(choice (const :tag "immediately" t)
(const :tag "never" nil)
(integer :tag "days")))