With the help of MacArmy PST to MBOX Converter Tool, you can easily and quickly convert PST file to MBOX on Mac OS. This software allows you to batch export PST files to MBOX file format. It supports email clients like Thunderbird, Apple Mail, Eudora, Entourage, etc. It has a very simple and easy-to-use application. This software maintains all the folder structures during the conversion process. There is no need to install the MS Outlook application for the conversion process. It was suitable for all the latest versions of MS Outlook and Mac OS. You can also use the free demo version of the program and convert the first 25 items without any cost.