If you want a reliable and advanced software tool for moving PST files, I would suggest the MacSonik PST Converter for Mac. This software helps you safely convert PST to different file formats such as PDF, EML, EMLX, MBOX, HTML, MSG, DOC, etc, without losing any data. It works with all major email services like Gmail, Yahoo, Office 365, and others. Using this software, you can migrate one or an entire mailbox at once.