If you want to convert Mac OLM file into an Outlook PST file without installing a third party application. So, there is a free manual method for OLM to PST conversion, where users just need to follow some simple steps as given in the blog. To get detailed information, visit:
OLM to PST Migration cannot be easily done by manual method because it has so many lacking points. Therefore I want to suggest MailsDaddy OLM to PST Converter to migrate single or multiple OLM files to PST file format. It has several useful features and conversion that allows user to move every single email, contact, calendar, task, attachment, etc. to PST file format.
You can also use the free demo edition and migrate 20 emails per mailbox for free. For more info: Manually converter MAC OLM to Outlook PST