If you are looking for a tool to remove duplicates from Outlook PST files without error, then you should try the OSTtoPSTApp PST Duplicate Remover. It is perfect for deleting duplicate emails without a single error. It quickly removes your duplicate PST emails and maintains your original data without any changes. The software removes a large number of duplicate PST emails in one attempt. It is compatible with all types of Windows OS versions, including 11,10, 8.1, 8, and 7, and delete your duplicate PST emails without MS Outlook or any other applications. You can use their free trial.