08-06-2025, 11:52 AM
The best way to clean duplicates in Outlook is by using SysTools Outlook Duplicate Remover, a powerful and easy-to-use tool to eliminate duplicate items from Outlook data files. It supports both PST and OST formats, including password-protected and corrupted files. With features like dual mode for removing duplicates within or across folders, bulk file processing, and support for emails, contacts, calendars, tasks, and more, this tool ensures a clean and optimized Outlook experience. It is the ultimate solution if you're tired of clutter and performance issues caused by duplicate data.