Download, install and start the software on any Windows device.
Now, add PST file by click on the Browse button.
Get a preview of PST mailboxes and hit the Export button.
Select MBOX file format in Export options to migrate to Apple Mail.
Provide a location to save the resultant file.
Hit Convert Now button and this commences to import PST file to Apple Mail. Within a couple of minutes, the conversion gets completed.