Anyone any ideas on how I can migrate my email from the Mac (.olm) to Office 365?
Thanks
If you want to convert OLM file into Office 365, I would recommend Mac OLM to PST Converter for convert OLM file into Outlook PST format, the software come with many advanced features and It provides a single and batch conversions on Mac OS. You can preview of OLM file before the conversion, and then you can easily move your Outlook PST file in Office 365. For more information: https://www.toolscrunch.com/mac-olm-to-pst-converter.html
Did you manage to get this resolved?