How do I delete multiple duplicate email messages in Outlook?

In this post, we will explain how to delete duplicate email messages, contacts, assignments, and other items in Outlook. It also included the most effective method for removing duplicate emails from Outlook. Importantly, we outline the verified and secure method for removing duplicate emails with Email Duplicate Remover.

Email is a vital component of organizations and enterprises. Microsoft Outlook is the most trustworthy and secure email client for organizations and businesses. Due to its appealing user interface, it provides a high level of security.


Even Microsoft Outlook has too many beneficial features, but due to a bug, your PST files are experiencing issues. Duplicate communications are an enormous problem. Well, duplicate emails create a great deal of confusion between newer and older emails, e.g. B. regarding which emails have been answered and which have not.

Why Should We Remove Duplicate Emails From Outlook?

  1. Duplicate emails can muddle the distinction between responded and unanswered messages.
  2. It expands Outlook needlessly.
  3. You must pay more for additional storage as you require more space for data storage.

How to Manually Delete Multiple Duplicate Emails in Outlook?

Outlook also includes an inherent function known as the Clean-up Tool for removing duplicate emails. You must adhere to the instructions as outlined below:

  • Launch Microsoft Outlook and select a mailbox folder.
  • Then select “Home” followed by “Clean-up”
  • Clean up Conversation removes and deletes duplicate emails from a particular folder.
  • The cleansing folder eliminates duplicate emails from a particular folder.
  • The “Clean Folder and Subfolders” command eliminates redundant folders and subfolders.
  • You can select any of them according to your tastes.
  • Then, right-click on the deleted data and touch on the empty folder to delete duplicate emails permanently from Outlook.

Why should users avoid manual techniques always?

  • It requires a significant amount of time and is a very complicated procedure.
  • Users must possess extensive technical knowledge to manage this procedure.
  • Also displayed is an error message: “No messages were cleansed. Only messages that correspond to the selected cleanup option will be transferred to the Trash.
  • This solution makes it difficult to ascertain the precise number of duplicate emails.

How to Delete Duplicate Emails in Outlook Using a Different Method?

A manual approach is not the best option. We recommend Softaken Outlook Duplicate Remover as a result. It is an excellent option that is specifically designed to locate and remove redundant emails from the application with ease. This software is furnished with cutting-edge algorithms that produce precise output without data loss.

  • Download and install Softaken Outlook Duplicate Remover on your Computer.
  • Select the PST/OST Files, Select the Folder, and Single/Multiple PST/OST files.
browse pst
  • Select the Remover Duplication Types: Select the desired search option – either search duplicates across PST or search duplicates within the folder.
  • Select the Output Location and Click on the Browse Button.
  • Finally, click the “Remove Duplicate Emails” button to remove the selected duplicate emails from PST files.
remove duplicate emails

Additional Advantages of Using Professional Application

  • This solution can also be used to divide PST files based on their required size, including 2GB, 4GB, 10GB, and 20 GB.
  • Additionally, a distinct PST file per account can be used to simplify and streamline the process.
  • This wizard is extremely user-friendly for both novice and advanced users.
  • It gives you complete freedom to choose the output file storage location according to your needs.
  • This program does not affect the original file.

Final Words

In this comprehensive guide, we explain how to delete duplicate emails in Outlook in mass. In Microsoft Outlook, removing duplicate emails is not a straightforward task for users. We have discussed the walkthrough solution for merging and removing duplicate emails in Outlook to make the process simpler. We have discussed both manual and professional alternatives in this post. You can select a solution based on your requirements and delete duplicate communications.

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