0
I have archived my old mails (from another system which goes back forever). I do NOT want to import it anywhere, but I do want to be able to read it. Ideally it should also work when I make everything read-only because I don't like archived data to change. Also I don't want to keep it on my NAS-system and not move it into any home directory.
It seems that Thunderbird is not able to do it, so how can I read those mails?