SysTools Outlook Duplicate Remover offers a professional and automated way to eliminate all kinds of duplicate items from your Outlook mailbox.

The software is designed to scan and remove duplicates from both PST and OST files, without any risk of data loss. You can choose to remove duplicates from a single folder, multiple folders, or even across the entire mailbox. The tool also provides advanced filtering options, allowing you to remove duplicates based on fields like subject, sender, text, date, attachments, and more. This ensures precise results and gives you full control over what gets deleted or retained. SysTools Outlook Duplicate Remover supports two working modes:

Within Folder Mode – removes duplicates from the same folder.
Across Folder Mode – identifies and removes duplicates across different folders.

The software is compatible with all versions of Microsoft Outlook (Outlook 2021, 2019, 2016, 2013, and earlier), and works with both ANSI and Unicode PST files. It can handle large Outlook data files without corruption or performance issues, making it suitable for corporate and individual use alike.