Rated 2 out of 5 stars

During the free period it worked well but now, after paying I have to log in every time I open Thunderbird.

Hello Vomesk, the behavior of the application does not change at all between the free period or after you pay.

If you have to log in all the time, then that's a policy of the company who gave you that email address. They control the login process. We try very very hard to keep you logged in, but if they don't want that, there is not much we can do about it. I'm sorry for the situation. If it was up to us, this problem would not exist.