why is outlook receiving duplicate emails

Why Is Outlook Receiving Duplicate Emails?

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These days, duplicate emails are causing problems for a number of Microsoft Outlook users, who are unaware of the reason why duplicate emails are ending up in the Inbox, Spam, and Junk folders of Outlook. If this sounds like you and you’re looking for ways to get rid of duplicate emails in Outlook 2021, 2019, 2016, 2013, 2010, 2007, and previous versions. So stop worrying and keep reading this helpful article to find out why Outlook keeps downloading duplicate emails and how to stop getting them.

What Causes Outlook to Download Identical/Duplicate Emails?

For a variety of reasons, Microsoft Outlook may download duplicate emails, which can be very annoying for users. Even with duplicate clutter, receiving emails in Outlook becomes sluggish. The following are some typical reasons why Outlook users keep getting duplicate emails:

  • Rules or Filters for Emails: Outlook email rules and filters that are not configured correctly can result in emails being received in the Inbox, Spam, and Junk folders. Use rules carefully at all times as one of the main causes of duplicate emails in Outlook is incorrect rule implementation.
  • Setting Up an Email Account: Duplicate email downloads may result from incorrect configuration settings in the email account. For instance, duplicate emails may appear in your Outlook if the same email account is set up using different protocols (POP3 and IMAP).
  • Synchronization Issues: Duplicate files may be downloaded if there are issues with the email server and Outlook’s synchronization. This may occur if there are disruptions or problems with connectivity during the email synchronization process.
  • Corrupt Outlook Data Files: When emails are being received or updated, corruption in Outlook data files (such as PST or OST files) can result in email duplication.
  • Email Server Problems: Outlook may occasionally receive duplicate emails due to server-side problems on the part of the email provider.
  • Outlook Plugins and Add-ins: Installing certain third-party Plugins or Add-ins in Outlook may cause issues with email synchronization. Even unintentionally ends up being the cause of Outlook desktop duplicate email downloads.
  • Human Error: Inadvertently clicking the “Send/Receive” button more than once, or performing other actions, may cause Outlook to begin downloading duplicate emails. When importing emails from PST, users may occasionally forget to activate the “Do not import duplicates” option.

Manual Techniques to Stop Receiving Duplicate Emails in Outlook

To prevent Outlook from downloading duplicate emails, there are a number of manual methods available. The most useful and often-used tips and tricks for removing duplicate emails from Outlook 2021, 2019, 2016, 2013, 2010, 2007, and earlier versions are covered here.

#1. Check the settings of your email account:

Make sure there aren’t any duplicate accounts set up in Outlook by checking the email account settings. Remove a duplicate account right away if you find one set up with a different protocol.

#2. Review Email Rules and Filters

To prevent downloading duplicate emails in Outlook in different folders, review and modify the email rules and filters.

#3. Fix Outlook Data Files:

Use Outlook’s built-in repair tool (Scanpst.exe for PST files) to fix Outlook PST files if corruption is suspected.

#4. Remove Duplicate Servers:

If server-side problems are found, get in touch with your email provider to fix the issue so that Outlook stops displaying duplicate emails.

#5. Avoid Importing Identical Data:

if you are using your Outlook client to import emails from PST files. The “Do not import duplicates” option must then be enabled, as indicated in the figure below.

#6. Organize Folder:

You can also use the Clean Up folder option if you find duplicate emails in your Outlook folders. It is advised to use this feature to extract duplicate emails from PST files that were exported from all Outlook versions.

#7. Verify your POP3 account settings.

In the event that you have set up an Outlook email account with POP3 protocols. Then, kindly review your configured account’s pop3 settings. Here, make sure that the option to “Leave a copy of messages on the server” is turned off (unchecked). Account Settings >> Email Account >> More Settings >> Advanced is where you can find this option.

Choose Professional Solution – CubexSoft Outlook Duplicate Remover

To get rid of duplicate contacts, calendars, emails, tasks, notes, journals, attachments, and more from Outlook, use the best Outlook Duplicate Remover Tool. Thus, this is a useful tool for answering questions like “Why is Outlook receiving duplicate emails?”

With Outlook desktop clients, you can use this software to stop getting duplicate emails. Before upgrading to the licensed edition, you can examine the tool’s functionality and features in a free trial version.

Steps to Automatically Remove Duplicate Items in Outlook in Bulk Mode

  1. Launch the program, then enter Outlook profile information in the program panel.
  2. Next, pick the necessary Outlook items that are cluttered and click Next.
  3. Activate a mode to address duplicate clutter both inside and between the folders.
  4. Use the advanced filter options to select specific criteria and get rid of duplicate emails.
  5. To specify a required destination path of your choosing, select the Browse icon.
  6. Click the Remove button to begin clearing the clutter of duplicate emails.
  7. Press OK to verify that the task has been successfully completed if it appears to be.

Helpful Note: Are you searching for a solution to convert multiple PST files to multiple formats? If yes is your answer, then you should take the help of professional all-in-one CubexSoft PST File Converter Tool to directly convert bulk Outlook emails to multiple file formats such as PDF, MBOX, EML, MSG, DOC, RTF, TXT, PNG, JPEG, TIFF, CSV, ICS, Thunderbird, OLM, Lotus Notes, Zimbra, Yahoo Mail, Exchange Server, IMAP, and many more. This software was suitable for both Mac OS and Windows OS including Windows 11. With the help of the program, one can easily convert Outlook emails with attachments without Outlook.

Final Words!

You have now learned about a variety of automated and manual methods for removing duplicate emails from Outlook. Additionally, we have outlined the main theories as to why Outlook keeps storing duplicate emails in folders. Additionally, you can read some advice on how to get Outlook email clients to stop sending duplicate emails.

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