Please let me know if you know how to move the PST file in Thunderbird without using Outlook. eSoftTools PST to MBOX Converter Software is a practical alternative for converting PST to Thunderbird without Outlook migration issues. Just a few more steps are needed to complete it. Each folder in a PST file should be exported as a separate MBOX file. Both of our customers have access to a free trial version. You will try out the trial version for free.
Read more:- Import PST Files Into Thunderbird Without Outlook
