You can manually convert MBOX files to PST by importing them into Thunderbird and then exporting to PST via Outlook, but this process is time-consuming and requires technical expertise. The major limitations of this method include complexity, risk of data loss, and inefficiency in handling bulk conversions. For a more reliable and efficient solution, consider using DRS Softech MBOX to PST Converter, which ensures fast, accurate, and secure conversion with full folder structure retention. It supports batch processing and eliminates the risk of data corruption