If you’re moving away from Outlook for Mac, switching email clients, or creating a portable backup, you’ll eventually face one common roadblock: OLM files. Outlook for Mac stores mailbox data (emails, folders, attachments, contacts, etc.) in OLM format, which is not widely supported outside Microsoft’s ecosystem. https://ayema.ng/blogs/311440/Free-Trial-vSoftware-OLM-to-MBOX-Converter-for-Mac-OS