Go with securest MacArmy Mac MBOX to PST Converter. It is an effective approach to convert huge files of MBOX into PST files in single processing. It comes with interactive GUI interface that makes the software easy to understand. This tool also offers demo that allows conversion of 25 MBOX files to PST files without any charges. This app is well supportable to both Operating Systems like Mac (Mac OS Monterey, High-Sierra, Monterey, Big-Sur, Mojave, Ventura, etc.) and Windows.