Delete Duplicate Emails in Outlook 2016, 2013, 2010, 2007 – Resolved

Delete Duplicate Emails in Outlook

Are you frustrated with unnecessary storage captured by duplicate emails in Outlook? A lot of users from around the world are frustrated with this issue. Hence, they want to delete duplicate emails in Outlook 2016/2013/2010/2007 version. However, here also due to lack of knowledge, they don’t know the ways to do so.

In this article, we are going to show you the ways by which you can delete these duplicate data items present in Outlook. Both manual & automated methods are discussed along with their advantages & disadvantages. Moreover, the reasons why these duplicate items get created are also there. This can help users to prevent creating duplicates from now on.

Deleting Duplicate Emails in Outlook | How Duplication Happens?

We know you want to learn how to remove duplicate emails from Outlook 2019 / 2016 & other versions. However, before that users must understand the reason for this issue. All of the most common reasons that cause this problem are mentioned below.

  • Misconfiguration of Rules & Retention Policies
    Users often create false rules in the Outlook application which can cause the duplication of emails & other data items. Due to very basic knowledge of Outlook’s technicalities, users are not able to identify this issue & it keeps on filling the storage with duplicate files.
  • Using Antivirus Scanner (3rd Party)
    Do you have a third-party anti-virus in your same system which you also use to access your Outlook account? If yes, then there are chances that the antivirus may intercept the sending & receiving of emails which may cause email duplication due to technical errors.
  • Creation of Multiple Profiles or Accounts
    If you configure a single email account in multiple systems, then be ready for the repeated synchronization of incoming data files. This can result in users receiving multiple copies of duplicate Outlook emails.
  • Misconfigured Mailbox Setting Issues
    If you won’t pay attention to the mailbox settings while creating a new profile, then there are chances that random settings configuration will start providing you with the same email, calendar, contacts, etc multiple times.

Also Read: Extract Multiple Attachments from Outlook Application

Delete Duplicate Emails in Outlook 2013 & All Other Versions

There are two basic changes that users need to do in order to stop getting duplicate emails in the Outlook mailbox. Users must perform these changes only if they have antivirus in their system or misconfigured Outlook rules.

Disable the Antivirus Scanner Integration with the Outlook
Without any delay, users must disable the email protection from the settings of the antivirus. Check out the instruction manual to find the way to do so. Then make sure that duplicate emails aren’t getting stored after changing this setting.

Configure Outlook Rules the Right Way
Also, if you have configured the rules falsely then correct them the way they should be. You can find several ways on the internet for the ideal configuration of Outlook rules.

Deleting Duplicate Emails in Outlook Step by Step Manually

There are two manual ways available for users to stop getting duplicate emails & deleting the presently stored duplicate data items.

Method #1 – Running Inbox Clean Up Tool

Outlook comprises various utilities in itself & the Clean Up wizard is one of them. Below are the ways to use this utility & erase the duplicate Outlook emails.

  1. Open the Outlook application in your system.
  2. Select the mailbox Folder containing the duplicate emails & other data items.
  3. Go to the Home tab & Click on the Clean Up feature

Inbox Clean Up Tool Outlook

  1. Select the Criteria as follows:
    1. Clean Up Folders
    2. Clean Up Conversation
    3. Clean Up Folders & Subfolders
  2. In the end, Right Click on the Deleted Items folders & then Select the Empty Folder option for permanently deleting duplicate emails.

Method #2 – Setting Inbox Update Frequency

After knowing how to delete duplicate emails in Outlook 2010 & other versions, you must stop Outlook from creating the duplicate messages again.

  1. Open the Outlook & then Click on Send or Receive option.
  2. Now Select the option “Define Send” or “Receive Groups”
  3. Select “Schedule an automatic send/receive every” & enter the value between 15 to 30 minutes.

Outlook Inbox Update Frequency

These manual methods work but come with plenty of drawbacks. Several users stated that the manual method is the old method & today’s automated methods are much safer, faster, efficient & practical. In addition, the manual method can not delete bulk duplicate emails at once.

Automatically Delete Duplicate Emails in Outlook 2007, 2010, 2013, & 2016

To automatically delete duplicate emails in bulk from your Outlook application, Users need to use the automated tool. Users are advised to download Microsoft Outlook Duplicates Remover & then follow the below-mentioned steps.

Step-1. Launch the Tool & Click on the Add File button.


Step-2. Select the Categories from which you want to delete duplicate emails.


Step-3. Set the Duplication Criteria from the various available options.


Step-4. Click on the Next button & after completion Hit the Ok button.

step-delete duplicate emails in Outlook 2016

Advanced Features of the Automated Solution

The automated tool has various features due to which deleting duplicate emails in Outlook is an easy task now. Below are the key highlights of this tool mentioned to know the capabilities of this advanced tool.

  • This advanced tool can delete duplicate emails, contacts, calendars, journals, tasks, and notes in a smart manner.
  • It provides its users with the feature to delete data from either within the folder or across the folder.
  • Various filters available here can selectively delete duplicate data based on their properties, categories, & date range.
  • Doesn’t matter if your files are in OST, PST, or BAK format, the software is capable of deleting duplicate files from all of these formats.
  • It also offers two types of reports after the procedure for better analyses for further projects & operations.
  • Windows 11(64 Bit) & below are supported here. In addition, all Outlook versions are also supported in this utility.

Also Read: Recover Outlook Calendar Deleted Items 2016, 2013 & 2010 Version

The Final Verdict

It’s easy to delete duplicate emails in Outlook 2016/2013/2010/2007 with the right knowledge, approach & tool. The above-mentioned automated method can easily help users get rid of duplicate emails.

Evidently, it can result in better performance of Outlook, more storage space & Smooth sending & receiving of emails & other data items. Hence, experts recommend the automated method for a valid reason.


Please enter your comment!
Please enter your name here