How to connect Thunderbird mail database?

Question

Mozilla Thunderbird

Essence of a question - there is a folder with a profile of a mailbox.
It has a lot of files and folders. The folder names were in Russian and they are displayed as character sets (as far as I understand the encoding is UTF7-IMAP)
Actually the question is how to slip this folder into THunderbird so that you can view letters?
I tried to create a profile and slip it in there - the folders are connected, but they are displayed as crackers, although the letters are readable.

Answer 1

Try the ImportExportTools plugin. It might help.