If someone knows about “PST to Thunderbird without outlook”. I have a realistic solution of PST to Thunderbird without Outlook conversion problems that name eSoftTools PST to MBOX Converter software. It's simple to complete only and takes a few more steps. A PST file's folders should be exported as separate MBOX files. A trial edition is also available for all of our users. In the demo version, you can convert up to 25 email objects per folder without paying anything.