My MBOX file has become large due to duplicate emails, and it is slowing down my email client. I am worried about accidentally deleting important messages or damaging the file structure. What is the safest way to remove duplicate emails from an MBOX file while keeping the original emails and attachments intact?

If your MBOX files is to large becouse of duplicate emails, and you can remove them. Then try the best tool like TrustVare MBOX Duplicate Remover tool, which quickly finds duplicate items in the MBOX files and removes them without losing important data. The software handles a large number of duplicate MBOX files without downloading any other application. It will run on all Windows OS versions like 11, 10, 8.1, 8, and 7. It provides a preview option before deleting duplicate MBOX files. You can try the free demo version before buying this tool.