You have a very large duplicate MBOX file with thousands of emails. You should try OSTtoPSTAPP MBOX Duplicate Remover; it is a very effective tool to remove duplicate MBOX files. It automatically scans duplicate files from MBOX and removes them without losing your data. This tool handles a lot of duplicate MBOX files without installing any application. It will support all Windows OS versions like 11, 10, 8.1, 8, and 7. Non-technical users can also use this software without any technical skills.
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