Mac PST to MBOX Converter tool converts PST files. PST to MBOX Converter tool is a third-party tool that can convert your PST files into MBOX format. This Converter tool migrates all your Outlook PST data including emails, contacts, calendar, notes, etc. to MBOX format. This tool has the ability to convert PST files into different file formats such as MBOX, PDF, MSG, EML, OST, HTML, EMLX, etc. It can easily export normal and damaged PST files.