Yes, there are multiple reliable MSG duplicate tools for handling large MSG file collections, then I can suggest a perfect tool becouse I,m also using it. You can try the TrustVare MSG Duplicate Remover which quickly finds duplicate items in the MSG files and removes them without losing original data. It will handle a large number of duplicate MSG files without downloading any other application. The software capatible with all Windows OS versions like 11, 10, 8.1, 8, and 7. I can try their free trial before buying this so you should thier frist free trial and see their removal process.

Visit here: https://www.trustvare.com/duplicate-remover/msg/