Why does Thunderbird (latest) delete my Inbox messages afyter about 20 days when I have set my IMAP server to DO NOT DELETE ANY MESSAGES?
I noticed from a 2 y.o. post here that people were told that IMAP server settings will apply to the Inbox, including Delete. My IMAP server setting specifically says not to delete ANY messages - but it does, and they vanish completely, which is annoying. I also noticed that it says to synchronise all messages locally - no other synchronisation setting seems to be relevant. Can you help?
Additional System Details
- User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:72.0) Gecko/20100101 Firefox/72.0