MS Mail 11 As of January 1 2024 all my posts vapourized in folders

[RobBar]

I signed on to my Telus mail account on desktop and except for Inbox/sent other folders had no mail entries as of today.

I had on my phone changed Archive to Discarded now set back

[FuzzyLogic]

Have you tried logging into your email via a web browser to see if the mail is still on the server?