When you export a large MSG files from Outlook, duplicates often appear due to repeated backups or multiple saves. To remove them efficiently, you can use SameTools MSG Duplicate Remover. The tool scans all MSG folders, compares items based on subject, sender, and date, and removes duplicate files while keeping the original data safe. This software helps you keep your mailbox organized, saves storage space, and improves performance. It’s lightweight, easy to use, and compatible with all Windows versions 11, 10, 8.1, 8, and 7. The best part is that it doesn’t require MS Outlook installation. Even non-technical users can operate it easily, and a free trial version is available to verify its accuracy before purchase.