Check email delivery (mail loop) check broken in 2.1.0p36

[chauhan_sudhir]

It is related to this thread from another user

Check Mail-Delivery-Process via "modern auth" (Microsoft Outlook)

Hello @Niklas , functionality works as expected, however following Werk #16043 the IMAP call now deletes all emails from INBOX. Reproduced with on-prem MS Exchange and HCL Domino mailboxes (so completely different vendors and IMAP server implementations). This should be checked as I don’t think this is the expected behavior - otherwise there would be no point in the custom mail subjects created by the loop check if you delete everything anyway on every check interval.

We have opened an internal ticket on this. Its currently under iinvestigation.