Try TrustVare MBOX to MSG Converter helps you to Convert MBOX files to Outlook MSG simply. It's the fastest way to get a professional and fast solution. Used it personally and worked wonderfully. Why is using the MBOX to MSG Converter a good idea? Export MBOX files to Outlook MSG without any data loss. Support MBOX Files of Thunderbird, Apple Mail, Eudora, Entourage and Other Applications. It preserves email settings, folder structure and attachments during conversion. It supports all versions of Outlook i.e. 2021, 2019, 2016, etc. Try it out for free before you buy it.