Here is an easy way where you can Convert Mac OLM file to PST format without any data loss risk. This Regain OLM to PST Converter Software easily Export your Mac OLM data including the calendars, contacts, attachments, events, journals, etc. to Outlook PST format. This tool can convert your Mac OLM file to PST and many other file formats like: MSG, EML, EMLX, PDF, MBOX, HTML, MHT, XPS, DOC, RTF, Office 365, etc. you can also see the preview of all emails before conversion.