This suggests that it store all mailbox data like Inbox, calendars, contacts, etc. Its function and use are the same as that of Microsoft Outlook PST files on Windows.
The OLM file format is specific to Outlook for Mac it was devolved with Outlook 2011 for Mac. Here, we explain several reasons why users want to convert OLM files to PST format. Once on Mac, Outlook data stored within OLM files and on Windows, it is stored within PST files. Summary: MS Outlook email application can be utilized on both Mac OS and Windows OS, however, both platforms store mailbox data in different kinds of data files.
