eSoftTools PST to MBOX Converter Program which is a simple way to migrate your Outlook emails to MBOX. This can be cleared with a few more steps. PST files in ANSI and UNICODE formats are also supported for conversion. The software is compatible with all versions of Microsoft Outlook, both current and prior. There is also a free trial edition that allows you to convert 25 emails per folder.
Read more:- Migrate Outlook Emails to MBOX