If you are searching for the best tool that can open PST files on Mac then I will suggest you use the MacSonik PST Viewer. The software can read and view PST files without Outlook installation. It can convert PST files into multiple file formats such as PDF, MBOX, HTML, MSG, CSV, EML, EMLX, CSV, and many other file formats. Using this tool, you can also break down bulky PST files. It is highly compatible software to split large Outlook PST files including emails, contacts, events, calendars, and more items, into smaller ones.