An “Export to Archive File(.olm)” wizard will be displayed on your screen, select the items you need to export (like emails, contacts calendars )from the wizard and press Continue.Launch Outlook for Mac and Navigate Tool tab and choose Export.Manual Method to Export Emails from Outlook Mac In this blog, we will also guide you on how one can export selected emails from Outlook Mac in OLM file and move those emails in PST and 5+ file formats. You can preserve that OLM archive file anywhere on your system. Need more space in Outlook for Mac inbox? Then the best approach is to archive your emails, contacts, etc.