If you are searching for a premium tool that can convert MBOX files into multiple file formats then I will recommend you use the MacSonik MBOX Converter Tool for Mac. This tool is embedded with various advanced features like Customized Folder Name and Path, Smart Preview Mailbox Feature, and Date Range Filter Option that filters out MBOX mails according to particular dates and converts them into required formats. It maintains folder hierarchy and prevents data loss during conversion from MBOX To PST.