Deleted emails are reloading days later into my inbox?

I use POP to access email in Outlook for Mac. I delete emails and randomly the next day (2 or 3 times) all of my deleted emails reload… It's happening right now as i write this. It used to do this once a year whenever there was a major "reboot" at Yahoo. Now it does it 3 - 5 times per day. Very annoying. I do i make it stop!

Interestingly it doesn't show these in the webmail version or on my iPhone or iPad… Just on my Mac with Outlook.

I was able to find and correct a problem on the back end of your account that likely caused this issue. Please try again, you should find the issue is resolved.