With the launch of Outlook 2011 for Mac, the OLM file was generated. OLM files are Outlook for Mac's master database file format for storing local Outlook data (such as emails, attachments, contacts, calendar data, tasks, notes, journals, etc.).
By default, an OLM file is not created; it can be generated through various export methods. Moreover, depending on the type of data required to reside in the file, you can filter the data.
The maximum OLM file size is not stated but the OLM file does not exceed 2GB to minimize the problem of corruption.
Where is OLM File Stored on Mac?
By default, depending upon the Outlook edition you are using, your Outlook mailbox data is stored at the following locations:
The majority of people already know that on Mac and Windows, Outlook has different versions. The only difference between a PST File and an OLM file is that Mac Outlook generates an OLM file and Windows Outlook creates a PST file.
In Mac Outlook 2011
OLM is a database file for Outlook for Mac that stores complete mailbox data items in it. For example Emails, notes, contacts, etc. OLM is a common file format for Outlook for Mac. As users continue to search for queries related to OLM files, thus all technical points such as what is an OLM file; where it is located on the Mac machine is available here.
