Email moves from Inbox into Junk by itself
Every once in a while I notice when I mark an email as 'Not-Junk', after a few hours the email goes back into Junk by itself. Once an email arrives it should not jump into another folder by itself. Very irritating.
Tim Hancock commented
This happens to me frequently too. Mail that I use rules to move to organized folders also gets moved back to Junk. I also have Outlook 365 on my desktop so I wonder if the web and desktop versions get out of sync.