You can use OLM to PST Converter for Mac. As it’s a Mac application developed by Software that ends the frustration of OLM to PST conversion in Mac OS. It can convert Mac Outlook files to PST directly. Moreover, it has a user-friendly interface, specially built for users with no experience with email conversion. There is nothing that lacks in Mac OLM to PST Converter. It’s a good software which you could use. Visit here for more details:-
http://www.toolscrunch.com/mac-olm-t...converter.html