How do I remove duplicate emails from multiple Outlook folders at once?

sanmart

Member
Aug 23, 2025
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If you want to remove duplicate from Outlook across multiple folders at the same time, start by backing up your PST file. Manual deletion is possible, but Outlook requires you to check each folder separately, which is not ideal for large mailboxes.

To simplify the process, many users rely on software such as SysInfo Outlook Duplicate Remover. After adding the PST file, you can select the option to search for duplicates across folders instead of limiting the scan to a single folder. The tool scans all selected folders together and identifies matching emails based on defined comparison settings. Once duplicates are found, you can choose to delete them permanently, move them to another folder, or create a new PST file without duplicates. This method saves time and keeps your mailbox organized.
 

WilliamsWelsh

Member
Jun 24, 2025
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Dealing with duplicate emails scattered across multiple Microsoft Outlook folders can be frustrating and time-consuming, especially when you need to clean up your entire mailbox quickly. Manually searching each folder to find and delete duplicates is not only tedious but also increases the risk of accidentally removing important messages. The most efficient way to remove duplicate emails from multiple Outlook folders at once is by using a dedicated duplicate remover tool. Solutions like the Cigati Outlook Duplicates Remover Tool simplify this process by automatically scanning your selected folders and identifying exact and similar duplicates based on criteria like subject, sender, date, and more. This ensures a clean and organized mailbox without the stress of manual work. For anyone looking to streamline their mailbox cleanup and improve Outlook performance, using a professional duplicate removal tool is the fastest and most reliable method.