Yes, there is a solution that would scan your Outlook PST and remove duplicate emails and contacts without messing up your data. You could then use Trustvare Outlook Duplicate Removal, which will quickly scan your duplicate PST and delete duplicate emails, contacts, and calendar entries while still preserving your data. You can also see all the duplicates detected in PST before deleting what you want to remove. The product allows you to keep your important items and delete unnecessary duplicates, keeping your PST organized while allowing Outlook to run smoothly. This tool can be capatible with all Windows OS versions like 11, 10, 8.1, 8, and 7 to name a few.

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