The ToolsBaer PST to MBOX Conversion Tool is the perfect exporter to use when converting Outlook PST files to MBOX files. This program works with any version of Windows OS. With any version of Microsoft Outlook, this program can convert PST files to MBOX format. Users can save their energy and time with this easy-to-use program. Converting PST files to MBOX files in bulk is simple. Transform PST files to MBOX files without any size restrictions.