Free trial version of Kernel for OLM to PST Converter is compatible with all versions of MS Outlook and Outlook for Mac. Programmed to support all versions of Windows OS, free version of the software is capable of converting 25 OLM emails per folder to PST format. To convert more OLM emails to PST format, you need to purchase the full versions of the software. www.convert10olmemailsfree.olmtopsts.net.