How to Delete Duplicate Emails in Outlook 2019, 2016, 2013, 2010,2007

The Outlook unquestionably sets itself apart from the market as a whole. Because of the features that set it apart from the competition, it provides you with more than just email inbox management. You can manage your tasks, calendars, and contacts, but occasionally users may encounter duplicate items when importing or exporting tasks. And these duplicate items could cause a number of issues for users. So, in this blog, we’ll cover the reasons for duplicate emails, how to delete duplicate emails in Outlook manually, and how the automated utility Outlook Duplicate Remover can ease your task.

win-dwn     download win
mac-dwn     Mac win

Why Remove Duplicate Items in Microsoft Outlook?

We are aware that Outlook keeps a duplicate copy of each user’s items, and that occasionally these duplicate files may be created during the import/export process. However, having duplicate items in Outlook can cause a number of issues. A few of them are listed below.

  • Duplicate items may cause users to become confused.
  • Having duplicate files could take up additional space.
  • Managing these duplicate items is challenging.
  • During Outlook backup, it will be difficult to manage the space.

Managing duplicates is always a daunting task, so deleting duplicate items in Outlook is necessary. If you want to recover deleted emails from OST file free then you can read this provided blog. Here are some methods that may help you to remove duplicate email messages in Outlook.

Delete Duplicate Emails in Outlook Manually

We are aware that Outlook is important to IT professionals, and the majority of them prefer Outlook. And if you run into any kind of issue, you need to get it fixed as soon as you can. Otherwise, a significant portion of the workload will increase, potentially disrupting your work. Therefore, manual methods can be used to delete copies of emails in Outlook. Here are some methods shared to resolve this issue.

Method 1: Reset the Inbox Message Frequency to Delete Duplicate Message From Outlook

Following these steps will allow you to delete duplicate emails in Outlook.

    • Start the Microsoft Outlook application.
    • Then select the Send/Receive Group tab under the Send/receive option.

Delete Duplicate Emails in Outlook

    • A new wizard opens; then select the Define Send/Receive Groups. Send/Receive option.

Delete Duplicate Emails in Outlook

    • Your account information is now displayed in a new wizard, which by default lists your group as “All Groups.”. If you wish to create a new group, click on the “New” button.
    • You’ll have the option to choose the frequency for sending and receiving messages in the same window.
    • The settings for offline mode are also programmable.


Method 2: Delete Duplicate items on Outlook by Choosing “Do Not Import Duplicate Items”

This is one of the simplest ways to stop identical copies from being made. This task is mainly performed during Import/export You can go with this method by following the steps.

  1. Launch Outlook and select the File tab.
  2. Select therefrom Open &Export > Import & Export
  3. Then select Export to a file and tap Next.
  4. From there, select the file type as PST.
  5. In the next wizard, select “Do Not Import Duplicate Items.” and finally tap on the Finish button.

Method 3: Delete Duplicate Email Messages in Outlook by Cleaning Up the Inbox

    • By clearing out your Outlook inbox, you can stop duplicate emails from entering your mailbox. Open Outlook, then select the mail folder from where you want to delete duplicate items.

Delete Duplicate Emails in Outlook

    • Then right-click on that folder and select Clean up.
    • A pop-up message would then appear asking you to “Clean up Folder” and informing you that all of the redundant messages in this folder would be moved to a deleted folder.


But what will you do, if you failed to Delete Duplicate Emails in Outlook by professional approaches? We‘ve seen that these manual approaches are too long to execute and also before these methods are put into action, technical expertise is required. Furthermore, employing these techniques does not ensure that they are only eliminating duplicate email messages from the chosen folder. Therefore, in this situation, you require technical support that not only enables you to delete duplicate emails but also safeguards your data’s original structure. Let us learn how you can delete duplicate emails from Outlook using a professional tool.

Delete Duplicate Emails in Outlook with a Professional Approach

The tool known as Outlook Duplicate Remover enables users to delete duplicate mailbox items such as emails, contacts, calendars, etc. It has a strong ability to recognize and locate duplicate items across multiple PST files, and after removing the duplicate items from Outlook, it will create a new PST. This software is easy to run, and prior technical Know-how also does not require it.

  1. Download and install the Outlook Duplicate Remover as an administrator.
  2. Then add the files, and the following wizard will display the added files’ or folders’ tree structure.
  3. Choose the files or folders whose duplicates you want to manage.
  4. Manage the utility features as per your requirements.
  5. Then choose either “Search Duplicate items within the folder” or “Search Duplicate Across the PST files” in the following panel.
  6. Select the option you want to use to manage duplicates of either mail, contacts, or any other item.
  7. Select the location for the new PST after managing your utility features.
  8. Finally, to begin the “Delete Duplicate items on Outlook” process, click the Convert button.


This article covered how having an identical mailbox can irritate us. How can you delete duplicate emails in Outlook manually or by using an automated tool. We have seen that the manual approach can be somewhat difficult and is not suitable for those without technical knowledge. While an automated tool doesn’t need any such prerequisites.

About The Author:

I'm a content writer in the field of Email Migration, Data Recovery, Email backup, and File Management. I started this writing career two years back. I think the vast range of information in this industry is the reason I am so fascinated to read about the newer techniques and technology.

Related Post

© Copyrights 2017-2024 by FileRecoveryTips is an affiliate partner of Sysinfo Tools - All Rights Reserved.