OLM files can’t be opened in Outlook on Windows. So, if you want to open your OLM emails in Microsoft Outlook, you can convert them to PST format and then view the files on your Windows PC.

A Proficient solution to import MBOX to Outlook 2016 Windows OS. Know more about MBOX files, and requirement of converting MBOX files to Outlook PST formats.

Open the app, click on File, and click on “Import Mailboxes.” Make sure “Files in mbox format” is selected, and then find your .MBOX file (s).