The tool which can be used to easily transfer outlook pst file to thunderbird is eSoftTools PST to MBOX Converter Software. It works well for performing PST to MBOX files conversion without data loss. It lets the user export Mail folders from PST to separate MBOX files. It is also able to Convert PST emails into numerous file types such as- EML, EMLX, HTML, MSG, and many others. It is easy to use and does not require MS Outlook for migration. A free demo version is also available of this tool. All users can try a demo edition of check software working and features for free.
