I would like to suggest about the OLM to PST converter software to convert OLM to Office 365 from Mac System. Also, the OLM file converter software to convert and save in different formats like PST, RTF, TXT, EML, PDF, HTML and MSG etc.
You can migrate many OLM to Office 365 format within few seconds without any problem. The software supports all latest version of Windows and MacOS. With the software you can migrate converted Mac file data in Office 365.
The OLM to PST tool provides save option to migrate OLM file to PST file saving in multiple items like from, to, folder name, subject and date etc.