SysInfo MBOX Converter converts single or multiple MBOX files into PST, PDF, EML, MSG, CSV, and other formats, or imports them into Gmail, Office 365, IMAP, and other email clients. It previews emails, supports date filter, duplicate removal, and attachment exclusion, while preserving the folder hierarchy. Its free version converts up to 50 emails per MBOX file. https://www.sysinfotools.com/recovery/mbox-converter.php