Hello, I have set up Outlook on my MacBook Pro as my default for managing emails. I have version 14.3.9 Mac 2011. Outlook is supplied by my BT Yahoo account. For some unknown reason, Outlook has started to re-download all the emails in my BT Yahoo inbox, meaning I now have several copies of the same email in my Outlook account. I have around 4,000 emails in my BT Yahoo inbox, and this is the number being downloaded each time. I now have over 12,000 emails in my Outlook inbox. Once the download starts, I cannot stop it. All my new emails are then the last to be downloaded. It is sending me around the bend! I also receive my emails on my iPad and iPhone without any problem, so I know it is something to do with my MacBook Pro. I have recently installed CleanMyMac2 and MAcPAw Gemini. Is this linked? Your assistance would be gratefully received.