OLM to MBOX Converter for Mac OS restores all emails, contacts, calendars and other data from Outlook for Mac (OLM file) and export to MBOX files. Further, you can import all mbox files emails and all other data into Mac Mail App, Thunderbird and other mbox file supported email clients for mac or windows.
This OLM File converter can convert Outlook OLM file to more email and text files formats like PST, EML, EMLX, MSG, HTML, MHTML, PDF, etc. You can also use this tool to import emails from the Outlook olm file into Office 365 & Gmail/G Suite.
Learn more - OLM to MBOX Converter