I have used Thunderbird with a POP3 account for years - it has become a large, handy, easily searched database of important information. MY ISP has forced me into Microsoft Office which doesn't support Thunderbird and, annoyed, I've jumped to Proton, which will allow me to continue with Thunderbird and to download my emails. My question is this:

Now that my old email address is no longer supported, Thunderbird goes nuts throwing up a constant message about not being able to connect. How do I stop this without deleting the actual account? (because if I do, I delete the entire database of emails associated with the account.). I just want to disable it so that it doesn't try to connect. And then I will simply add in my Proton email and carry on from there. At the moment, I get the message: "Log in to account "..." failed." and then three buttons - Enter new password, Cancel, Retry - but it doesn't stay concelled. It just keeps nagging me. And if I go into account settings, it won't let me disable the SMTP.