Hi all, I've recently switched OSes from Windows 7 (64-Pro) to Ubuntu Linux Mate 18.1 I was using T'bird on my Win PC. T'bird came with Ubuntu & so I set it up as a POP3 account, The same as on my Win PC. A little while later, it occurred to me, after doing a little research, that using IMAP would be better for my situation So, I changed my Win PC T'bird configuration over to IMAP. Now, I would like my Ubuntu PC to be IMAP too, but I've been unable to be successful at re-configuring my T'bird account in Ubuntu. I keep scratching my head as no matter what I try, nothing works. I even thought of uninstalling T'bird & reinstalling it, but I don't know how. I'm very new to Ubuntu & so I don't know how to do a whole lot, yet, much less reconfigure T'bird. (Log in to hide this advertisement) Can someone please walk me through the correct procedure? THANX in advance! Also, what does it mean every time that I start T'bird I get an error "Unable to open spool file"?