Sounds like you may have your Anti-Virus product scanning emails, so it is temporarilly interruptng thunderbird.

Suggest you stop your anti-virus from scanning Thunderbird folders or emails.

I would also suggest you create a backup of your profile and then compact all folders to remove all traces of previously deleted emails.

Hi cdepinho.

Can you give us an update please? We'd like to understand and know your situation, even if you resolved it.

Thanks

cdepinho said

It takes a very long time to process the e-mails when I click on them, whether to retrieve, delete, etc. Sometimes it is worse than other times. It usually says Mozilla Thunderbird not responding with the spinning thing.

I moved stuff from my IMAP mail to local storage. I also rebuilt the mail database. Thank you for your help. I very much appreciate it.

> I moved stuff from my IMAP mail to local storage.

Are you saying your imap Inbox was very large?

Yes. The imap inbox was too large.