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How to remove duplicate attachments in Outlook messages?

Generally, you may receive some emails with duplicate attachments in Outlook which will occupy the memory. This article introduces two ways to remove the duplicate attachments in Outlook.

Remove duplicate attachments manually

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Remove duplicate attachments manually

In Outlook, there is no built-in function that can find the duplicate attachments and remove them, you only can remove the duplicate attachments one by one.

Right click at the attachment you want to remove, and select Remove Attachment from the context menu.
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And click Remove Attachment in the popping out reconfirming dialog.
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Remove duplicate attachments by Kutools for Outlook

Actually, you can remove the duplicate attachments by searching the duplicate emails which contain the same subjects, bodies and attachments, then remove the duplicate emails. But how can remove the duplicate emails as quickly as possible in Outlook? Kutools for Outloo’s Duplicate Emails can do you a nice favor.

Kutools for Outlook , Includes 20+ powerful features and tools for Microsoft Outlook 2016, 2013, 2010 and Office 365.

Free install Kutools for Outlook, and then do as below steps:

1. Click Kutools > Duplicate Emails.
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2. In the Duplicate emails dialog, check the folders you want to find the duplicate emails, and the choose All selected folders or Same folder from the drop-down list of Find duplicates in.
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Tip: If you select All selected folders from the Find duplicates in drop-down list, it will compare and remove the duplicate emails across folders, if check Same folder, it will compare and remove duplicate emails in the same folder.

3. Click Delete, then all duplicate emails have been found and list in the Duplicate emails dialog.
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4. Click Delete, and a dialog pops up to tell you the number of removed duplicate emails.
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5. Click OK > Exit to finish and exit the function.


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