PST to MBOX Converter for Mac & Windows Tool to convert multiple Outlook emails to MBOX file format. It is the best tool to directly convert PST files to MBOX-supported email clients like Thunderbird, Apple Mail, Entourage, The Bat, etc. It allows you to batch import Outlook emails to MBOX file format with complete details and attachments. This software supports both Mac OS and Windows OS including Windows 11.