The manual method firstly convert OLM files to PST file format as you cannot convert OLM to MBOX directly without using any professional software. An Expert Solution to Export OLM to MBOX.

There are two methods to efficiently convert a Mac Outlook OLM file into an MBOX format. This format of files can save multiple emails as it can support extensive size data.MBOX file format is straightforward to handle.It is compatible with multiple email clients such as Yahoo, Gmail, Thunderbird, etc.MBOX files provide a user-friendly interface that is easy to read and view.MBOX files are easy to use and work very well on Windows and Mac. Users want to export OLM to MBOX because of the MBOX general configuration. It stores all the email messages in a single text file. It is used by many email clients Thunderbird, Eudora, and many more. At the same time, MBOX is a mail storage type of format and has unlimited users worldwide. Users mainly use Outlook to store contacts, emails, notes, journals, tasks, calendars, etc. We all know that Mac Outlook supports OLM files.

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