I want move towards using my own mail server, so I picked Dovecot. I plan on using thunderbird to retrieve my mail using IMAPS. I have never used either of the software, so my questions are a bit naive.
I don't understand the process of deleting email from dovecot from thunderbird. If I delete an email from thunderbird, this will eventually be deleted on Dovecot permanently (to save space on the server if it's running out of disk space)?
If thunderbird downloads all email from dovecot and stores them locally through IMAPS, what happens if I delete an email on the server (by logging into the server and manually deleting it)? Will this then be propagated down to thunderbird so that the local copy of that email will also be deleted?
This relates to the previous question: If I delete emails on the server to save space, how do I make it so that thunderbird can still see all the emails from the past? So I would still receive new emails, but I would also be able to see all the previous emails that had been deleted on the server.