The DRS Thunderbird Backup Tool is a handy program that helps you convert your Thunderbird emails to Outlook PST. Using the tool is pretty easy. You just need to tell it where to save your backup files, and it will do the rest. It also allows users to eliminate duplicate emails throughout the conversion process. You can also utilize its free demo version which allows users to convert 50 emails for free.
Download Free Demo Version: https://www.data-recovery-solutions.com/thunderbird-mail-backup.php