Thunderbird in 18.04.1

[Qqmike]

OK, Solved.

Short version:

I had a copy of my previous T-Bird profile folder from Kubuntu 14.04.
To import my address books, personal and collected, abook.mab and history.mab, I simply copied them manually (Dolphin split screen helps a lot here).
To import my mail folders from old to new profile folder, I also manually copied each mail folder I wanted copied into the new 18.04.1 T-Bird profile folder.

IOW, I did not copy the entire profile folder (contents) from old to new. Doing so (as I did above) causes some serious problems (that I don't have time to understand and probably don't need to understand).

Done deal.

Thanks, Rod J and others for your input.

[Rod J]

I've never bothered copying the profile from an old install for years now since I switched to IMAP on Gmail.

I find that you just need to set up the login info in Thunderbird and it just populates the mail folders from the servers. There are some settings in Thunderbird that allows you to limit what mail it fetches (like only the last six months or so) and then it just gets the headers of the other mail. It doesn't usually take more than about 30 minutes or so to sync the first time and I'm on quite slow internet, about 1Mbit/sec.

[Qqmike]

OK, it did word: I deleted/purged everything T-Bird and started from scratch, working through the setup, as you described you did. But then I copied my old .thunderbird (profile contents only) over to my new .thunderbird, and that's when it screwed things up. First time I've had this happen. So, tomorrow--when I'm rested--I will do all this again, but this time will only copy over the address books and my user folders (Inbox, Other, etc.), and see if that will work. I must be copying some file/folder over to my new profile folder that is messing something up. Thanks.

[Qqmike]

Boy, how strange here. I've spent a couple hours on this. In Muon, I purged T-Bird, then installed it again, and so on. I'm going to delete .thunderbird and try again.

[GreyGeek]

I take that to mean that when you click Get Messages, you are not prompted to enter your password?

Yes, for me as well. When I installed Thunderbird via muon and then fired it up, I was asked for my account name and email address. I entered that and Thunderbird set it self up automatically, and works perfectly. KWallet installed enabled BUT I haven't done anything with it. Its settings are default.

[Qqmike]

Yes, works for me.

I take that to mean that when you click Get Messages, you are not prompted to enter your password?

[SpecialEd]

Yes, works for me.

[Qqmike]

Is anyone successfully using T-Bird in 18.04.1?

I'm clicking Get Messages, and each time must enter my password.
I've tried to fix this (in the usual ways) but don't seem to be able to get it to go.
Anyone noticing this issue?