The best way to remove duplicate MBOX emails safely and efficiently is by using a reliable tool like SameTools MBOX Duplicate Remover. This software quickly scans and removes duplicate items from MBOX files, including emails and attachments, without affecting the original content. It efficiently handles large duplicate MBOX files without any glitches. It will help keep your mailbox organized and storage space optimized. The tool supports all Windows versions, such as 11, 10, 8.1, 8, and 7. This tool has a simple UI for beginners can use easily, and a free demo version is available to test the software before purchase.