If you are searching for the best and most efficient MBOX file converter tool. I suggest MailsDaddy MBOX To PST Converter Software. This software provides a user-friendly interface for both technical and non-technical users.

Key features:

This software supports over 20 desktop-based email clients including Mozilla Thunderbird, Apple Mail, Gmail, Webmail, Google Takeout, and many more.
This tool Creates a log file.
Import MBOX mail in Outlook 2019, 2016, 2013, 2011, 2010, and 2007 after the conversion of this software.
Users migrate MBOX mail in Live Exchange and Office 365 without any hassle.
It is compatible with all versions of Windows OS including new to older.