From MAILER-DAEMON Sat Nov  7 09:58:19 2020
Date: 07 Nov 2020 09:58:19 +0100
From: Mail System Internal Data <MAILER-DAEMON@example.org>
Subject: DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA
X-IMAP: 1604739499 0000000000
Status: RO

This text is part of the internal format of your mail folder, and is not
a real message.  It is created automatically by the mail system software.
If deleted, important folder data will be lost, and it will be re-created
with the data reset to initial values.

