Use OLM to Office 365 Tool to import Outlook Mac archive OLM to Office 365. The application is simple, built-up with user-friendly GUI so that any user can use the software and easily import Outlook Mac archive OLM to Office 365 with emails, contacts, calendar and other items. OLM File Converter offers many features such as option to import corrupt as well as large OLM files, multiple filters and options for selective import process and more. Use the freeware version of the tool to know the complete process to import Outlook Mac archive OLM to Office 365 free of cost. It allows to import first 25 files free of cost.