- If you don't know how to export IMAP account emails to the thunderbird local folder. Then I have the best solution for you: eSoftTools IMAP Backup and Migration Software. For doing this IMAP emails to Thunderbird import process in a minimum time period this tol is the best choice. With a smart process, it exports emails from entire or selective folders of the IMAP account. This software works on all editions of windows O/S including win, 11, 10, 8, 8.1, 7, XP etc.