Find Duplicate Messages Outlook: Email Cleanup Tool

Overview and Functionality

Free and easy way to find and mark duplicate messages in Outlook folders with flag and/or categories. Can find duplicates across folders and storages. The whole operation is completely safe, because the utility only marks duplicates without removing them from your mailbox. The product provides Outlook add-in and standalone Windows application for your convenience.

Technical Specifications

• **License:** Freeware
• **Operating System:** Windows Vista
• **Last Updated:** October 15, 2025
• **Category:** Email / Misc Email Tools