For converting PST to Thunderbird, the eSoftTools PST to MBOX Converter Software, which can be downloaded for free, is a good choice. Using the PST to MBOX Converter Software, which is cloud-based like Gmail, Yahoo, and Office 365, exporting Outlook emails to MBOX format for later use is simple. There are only a few steps left in this process. It is possible to convert PST files to ANSI or UNICODE formats. Both Microsoft Outlook 2007 and older versions are supported by the software. Customers with little or no technical skills will use the tool. You can move 25 emails from each folder during the free trial.
Read more:- Import PST File to Thunderbird