Duplicate Killer for Microsoft Outlook - Mail Cleanup Tool

Key Features

• Outlook duplicate remover add-in for Microsoft Outlook.
• Software to find and remove duplicate contacts, emails, calendar items, tasks and notes automatically.
• Merge Outlook contacts and other items.
• Compare, assign category, flag and move duplicates to selected folders.
• Manage duplicates in any Microsoft Outlook folder, including Microsoft Exchange and Public folders.
• Preview duplicate search results prior to processing

Technical Specifications

• **Publisher:** Duplicatekiller.com
• **License:** Shareware
• **Operating System:** Windows 7, Windows 8, Windows 10, Windows 11
• **Last Updated:** October 15, 2025
• **Category:** Business / Utilities