You can easily open & read PST files on Mac OS using MacUncle PST Splitter. The tool supports Mac OS Machines.
Start MacUncle PST Splitter on your Mac Computer.
Select Outlook PST file using Add File(s) or Add Folder(s).
Choose the requirement folders with PST files.
Click on any PST Email files and read the email messages in the software.
As soon as the process of splitting the PST file complete the tool notifies with a few process completion messages.