How to open OLM file Mac Outlook to Windows PST file format along with all email attachments? Go to download the OLM to PST Converter program from the official website and collect the simplest working steps to open OLM file Mac Outlook to Windows PST format including all emails, contacts, calendars, tasks, briefcase, journals, etc. This solution can safely export your OLM emails to PST with attachments. It supports batch function which helps for bulk open OLM file Mac Outlook to Windows PST format at once time only. For testing the complete program, you can use its free demo facility.