So the easiest way in which you can extract emails from MBOX files is an amazing software that can be the great choice of the user, that is SysInspire MBOX to PST Converter tool. This software can automatically load your MBOX file without wasting time. It can detect all errors in the MBOX file and fix it. This software can convert MBOX files in different formats like PST, Office 365, EML, VCF, CSV, Yahoo Mail, MSG and many more. You can use it without any technical knowledge due to its interface that is easy to understand to any new user. You also check its free demo to use its working process.

More info - Migrate Thunderbird to Outlook