The best MBOX converter tool I’ve used so far is the GoldyTools MBOX Migrator Tool. It offers an all-in-one solution to convert MBOX files into a wide range of formats, including PST, MSG, PDF, EML, EMLX, TXT, and also supports direct migration to popular email platforms like Gmail, Yahoo Mail, Outlook.com, Hotmail, and IMAP.

This tool not only converts emails but also exports attachments seamlessly to various formats and platforms. It comes packed with advanced features designed to meet both personal and professional migration needs.

Key Features:
Convert MBOX to multiple formats: PST, PDF, MSG, EML, Gmail, IMAP, and more

Date Range Filter: Migrate emails within a specific date range by selecting start and end dates

No email client required: Works independently without needing Thunderbird, Apple Mail, or any other pre-installed email client

User-friendly interface: Designed for users of all skill levels—no technical background required

Free trial version: Allows you to migrate up to 25 emails per folder at no cost

GoldyTools MBOX Migrator combines performance, flexibility, and ease of use—making it an excellent choice for anyone looking to convert or migrate MBOX files with confidence.
https://www.goldytools.com/mbox-to-pst-converter.html