Outlook emails auto-deleting unexpectedly—how to prevent this?

LeslieChia-6336 0 Reputation points
2025-04-21T05:32:39.1633333+00:00

I was in my Outlook Sent Items folder. Then I switched over to the Inbox. Although I didn't click anything, the emails in my inbox started auto deleting one by one before my very eyes. I couldn't stop the deletion no matter where I clicked. Finally, I switched over to another application and then switched back to Outlook. Only then did the auto deletion stop. But by then, a few hundred emails over 2.5 months had been deleted. Unfortunately, when I went over to the Deleted Items folder, none of the deleted emails were there. I also used the Recover Deleted Items from Server function, but the deleted emails were also not there. I have 2 questions:

  1. How/Why did Outlook activate the auto deletion function even though I didn't do anything?
  2. How do I recover the emails that have disappeared?

I am using Outlook 365

Windows 11 Home Edition

Version 24H2

Installed on ‎4/‎2/‎2025

OS build 26100.3775

Windows Feature Experience Pack 1000.26100.66.0

Outlook | Windows | Classic Outlook for Windows | For business

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