I recently had to reinstall my email account in Thunderbird when Yahoo (unannounced) changed their password policy. My email is billdinger@cox.net but is now being handled by Yahoo. Before this reinstall, everything had worked perfectly for years. However, Thunderbird is now downloading emails on it's own although I have told it not to via the Account settings - see attachment. I normally use an intermediary program between Yahoo and the server called Pop Peeper which checks the mail and I delete mail I don't want to look at on the server using that program, then I activate Thunderbird which, as a result, just has access to the mail I want to see. Again, I have used this arrangement for at least 15 years without a problem. I deactivated the email checker program to see if Thunderbird was doing the downloading of all mail on it's own and this is the case. What can I change or fix to stop this behavior? Bill PS - I'm not sure if the image I intended to attach completed uploading. The message on the page says "Uploading "TB Settings.jpg" but doesn't indicate it was completed. It's a small file 153 KB.