BitVare OLM Converter for Mac that can easily convert Mac Outlook OLM files to Windows PST format. The OLM Converter for Mac can also convert OLM to CSV, EML, EMLX, MBOX, MSG, HTML, PDF, IMAP file formats, and Office 365, Thunderbird, Gmail, etc. You can go with the demo version of the OLM Converter that is free to download and convert the first 20 files from OLM as a limitation.