I have two email accounts that download to Outlook. One is gmail, and that is working fine. My other one is a business account, managed by bluehost, and it recently started downloading all my emails. Not just new. So emails that I have already read and left in inbox, or filed them, or deleted them. They are all coming back. I need to stop this madness. For the time being, I had to manually stop all incoming emails for this account. I have checked all my settings, restarted computer, looked for updates, and anything else I could check on Outlook.
This also happened a couple years ago, and I think the Outlook tech support had me move all my files to a new folder, then clear my profile and open a new one, but I was hoping there was a simple setting to fix or update. I don't want to take the chance of starting anything over. Please help!