The Outlook for Mac Archivefile stores all information and items such as Mails, Contacts, Tasks, Calendar, Notes, etc.
OLM file is an archive format of Microsoft Outlook for Mac version and can’t be openedby the Windows Outlook versions. Now, in the top menu, go to File and then select the Export option to Archive Email in Outlook 2011 for Mac 3. First, you have to open Microsoft Outlook on your Mac machine 2.
Select any of your existing folders for the archive. A new folder will appear in your folder list for that email account.