When I upgraded from 22.04.5 to 25.04 my thunderbird got moved to snap and was no longer working correctly. I tried to get it fixed but no matter what I did something else went wrong. I have finally deleted the snap thunderbird. Now I am going to have to re-install. I am a bit concerned about taking all the stuff from another machine, which also has thunderbird on it and that thunderbird is running just fine and was not a snap thunderbird which is why I am being careful this time around and asking questions.
I don’t know about packaging-related features. When I installed thunderbird on other systems I usually just used ap to install it.
I have usually assumed that the software updater took care of that.
My main concern is moving the settings from a 22.04.5 system to a 26.04.2 system will work. I am not really sure about how the two will work together. In the good old days, when i moved stuff from one system to another (using same systems) I could just move the stuff from one system to another and update their titles with those being used with the other. I mention this because when I tried that with the 2 different systems my new, upgraded, system’s thunderbird just ignored them. I was able, however, to move all my
address books with no problems, for instance.
If you have any other question feel free to ask and thank you for the reply!