A recent update from Microsoft brought in a bug to the Mail app which silently deletes the Sent emails – and you cannot find them in the Outbox, Sent items, Spam, or any other folder. While the bug was reported sometime earlier this month, Microsoft is yet to acknowledge and fix it. If you are also using the Windows 10 Mail app, check if your sent emails are in your Sent box or not.
Mail App is auto-deleting Sent emails
There are numerous complaints reported on the Microsoft Answers on the bug.
Said the poster:
It appears that the recent May 28 update of the Mail and Calendar App ( to Version 16005.12827.20200.0) has broken the Gmail Account integration.
There are others too, who are facing this issue:
“I have been facing an issue with the Windows 10 Mail app linked to a google account. I have noticed that when I respond to emails, the email I send disappears and cannot be found in sent items, outbox, bin, spam, or anywhere actually. The disappeared email cannot be found on gmail’s web interface either. It appears that it is automatically deleted and erased from the server.
Anybody aware of a solution to this problem? I have posted my question to the Gmail community and was told that this is an issue that has been recurrently reported by users of Windows 10.
The Gmail problems appear to stem from the update released by Microsoft on May 28 causing Gmail integration to break. Reports from various users indicate that while some people’s sent emails are simply vanishing, for others they are being moved to the Spam folder. Version 16005.12827.20200.0 of the app is affected.”
While Microsoft has still had to provide a fix to the bug, an MVP has suggested a workaround that says you can just remove your Gmail account from the Windows 10 Mail app and add it again manually.
The best way to work around this is to remove the Gmail account from the Mail app and then re-add it manually via the Other Account POP/IMAP route using the IMAP settings.
Alternatively, you can also check your Google Settings and see if the Windows 10 Mail app has access to your Gmail account or not. Google reportedly considers the Mail app as a less secure app and might have revoked the access.
Do stay in touch with this thread on the Microsoft Answers page to get updates on this bug.