MacArmy PST Converter is a user-friendly application designed to convert multiple Outlook PST files into different formats such as MBOX, CSV, PDF, MSG, DOC, MSG, Office 365 CSV, etc.  It has an easy-to-use interface for users to implement the conversion of PST files smoothly. This utility can maintain the same folder structure even after changes. Users can export all attachments in and out of batches at once. A trial version of the software exports 25 items free of cost.