Variable: mail-source-imap-file-coding-system
mail-source-imap-file-coding-system is a variable defined in
mail-source.el.gz.
Value
binary
Documentation
Coding system for the crashbox made by mail-source-fetch-imap.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/mail-source.el.gz
(defvar mail-source-imap-file-coding-system 'binary
"Coding system for the crashbox made by `mail-source-fetch-imap'.")