Let us understand the situation with the help of an example. We know that direct importing of OST file is not possible because both the email client supports distinguished file formats.
But in some scenarios when the users want to move from the desktop-based Outlook email client to Mac Outlook then the question arises How to Import OST file to Mac Outlook 2016 application. Whereas, The OST files are the replica of the exchange server mailbox. The PST ( Personal storage table files) contain the data stored in the personal folders. This email client stores the data in two file formats which are OST and PST files.
Microsoft Outlook is the most prominent and desktop-based email client application.