If you're looking for an easy way to remove duplicate MSG email files to save storage space but still want to retain important emails, your best option is to use a duplicate remover tool like SameTools MSG Duplicate Remover. This tool scans your MSG files and finds duplicates by subject line, sender, date, and message body, and removes them. Once duplicates have been found, it safely deletes the duplicate MSG copies without modifying the original files. The tool is user-friendly, even for non-technical users, and it works on any Windows version, including Windows 11, 10, 8.1, 8, and 7. It also provides a free demo version to let you try out the features before you buy.