To move emails from MBOX files to Outlook you need to convert them to PST format. One way is to use Thunderbird: Import your MBOX files into Thunderbird then drag and drop the emails into Outlook. After that, you can save them as a PST file in Outlook. The easier way is to use professional MailsWare MBOX to PST converter toolkit like. This tool automatically convert MBOX files to PST and you can open them directly in Outlook. for more detailed guide you can visit my LinkedIn article: https://www.linkedin.com/pulse/export-mbox-files-pst-mailsware-inc-unfbe/