:type 'boolean)
(defcustom imap-debug nil
- "If non-nil, random debug spews are placed in *imap-debug* buffer."
+ "If non-nil, random debug spews are placed in *imap-debug* buffer.
+Note that username, passwords and other privacy sensitive
+information (such as e-mail) may be stored in the *imap-debug*
+buffer. It is not written to disk, however. Do not enable this
+variable unless you are comfortable with that."
:group 'imap
:type 'boolean)