Do you want to switch Mac to Windows Outlook? But, you have a query to be resolved ' how to read OLM in Outlook PST' and you are looking for a viable software solution to resolve your query efficiently. Outlook Mac Exporter is reliable software to execute Outlook for Mac 2011 OLM files. It allows you to shift all your OLM data into platform independent PST file, which can easily be accessed with any edition of Windows Outlook. On the other hand, OLM is proprietary format of Outlook Mac 2011.