I have been using TB to access my Office365 account using the TB Oauth protocol, however, it got to be painfully slow when trying to download messages. I had set up rules and folders that worked, albeit slow. To try to alleviate the slowness I started a new profile to my Office365 account again using Thunderbird's OAuth protocol. It's lightning fast! But it didn't bring down any of my Office365 folders that exist up on the Office365 servers. (see 2nd TB Install screen print below) It had brought down all the folders and previous e-mails in the 1st installation. (see 1st TB Install Redacted. Screenprint below) I don't know why this might happen, does anyone have any ideas? Is there a workaround or could I be doing something wrong? Thanks Dan