The WholeClear Thunderbird to PST Converter is a fast and safe way to migrate Thunderbird to Outlook. It allows you to fast and safely switch Thunderbird mailbox files into the PST format. You won't lose any data because the program can convert more than one email or folder at a time. It maintains all of the email attributes, such as the topic, sender, date, and attachments, the same. It works well on all versions of Windows and with all versions of Outlook. Interested users can check out the free trial version to learn more.