Cigati Solutions introduced an advanced utility that can convert Mac OLM data files to PST File Format Easily. The tool allows securely converting the Mac Outlook OLM files into PST and various other formats like EML, EMLX, MBOX, MSG, PDF, CSV, DOCX, etc. The software also offers to import the OLM files into numerous email clients like Office 365, IMAP, Opera Mail, Gmail, Yahoo Mail, Thunderbird, etc. A lot of features are introduced in the latest release of the Cigati OLM to PST Converter Tool.
Source: http://www.cigatisolutions.com/olm-to-pst-converter/