This is the best third-party software that converts various PST files to MBOX through KDETools PST to MBOX Converter software. It can also convert corrupted or normal PST file and save data in various file formats like PST, MSG, EML, PDF, HTML. Provides a message filtering option to filter the message between "Start Date" and "End Date". The user can import all emails to Exchange Server and Office 365 directly.

READ MORE:  https://www.kdetools.com/pst/mbox/