"Recently, I discovered that my sent items folder contains two copies of the emails I sent using my Gmail IMAP account in Microsoft Outlook. Following this occurrence, I discovered that Outlook had several duplicate messages delivered. I will now hunt for a resolution for this issue. However, despite investing a lot of time, I can't seem to find anything useful. Therefore, if you know of a workable remedy for my issue, please let me know.” 

Primarily, the problem of duplicate emails in Outlook is contingent upon the kind of account you have and the protocol you have set up in Microsoft Outlook.  

Microsoft Outlook offers us two protocols to set up our email accounts, as we are aware. Moreover, customers who configure their accounts using the IMAP protocol have most likely run into the problem of two copies of sent things being preserved in the sent item folder.  

We have therefore addressed the issue and will now address how to remove duplicate sent items in Outlook. Let's first examine the main causes of this double-sent items issue before we launch the blog.

Causes of Outlook Double Sent Items  

The most frequent cause of duplicate sent items in the sent folder in Microsoft Outlook is user configuration of an IMAP account. Additionally, Microsoft Outlook stores any emails they send in a sent folder. A duplicate copy of a single email is created in your send item folder since the IMAP mail provider also saves a copy of the sent mail. Usually, Yahoo and Gmail accounts experience these kinds of problems.

How to Manually Delete Duplicate Sent Items in Outlook?

As far as we know, there is no way for Microsoft to get rid of identical emails in the sent folder. However, one function that they offer prevents duplicate emails from being saved in your Outlook sent folder. Now, follow to the instructions listed below if you wish to cease preserving duplicate sent items in Outlook's sent folder.  

Launch the Outlook email app.   

Currently, select the File tab.  

Click the Info Option.  

Select Manage Profile under Account Settings now. 

Select your IMAP account. 

Click the Change option, then select More Settings. 

Now, select "Do not save the copies of sent items" from the Advance tab.

A Smart Method to Remove Outlook's Pre-Saved Duplicate Sent Items  

You won't have duplicate sent items in your Outlook in the future if you use the aforementioned manual way. The multiple emails that you sent and preserved in your sent item folder raise another question, though. 

The unfortunate news is that Microsoft offers no way to get duplicate emails out of the sent folder. Thus, if you're overflowing with duplicate emails in your Outlook sent folder and would like to get rid of them, think about using the Best Outlook Duplicate Remover Tool, an automatic solution. From Outlook PST, and OST files, it eliminates duplicates of all kinds, including emails, contacts, calendar entries, and tasks.

Features Offered by the Program  

The program can de-duplicate data from OST, and PST files that are password-protected.  

Enabled the option to extract duplicates from Within Folder(s) or pick Across Folder(s) to extract duplicates.  

Remove two copies of sent emails from Outlook while keeping your folder hierarchy and meta information intact.  

The ability to customize the fields while eliminating Outlook duplicates. Due to the tool's numerous features, which include the ability to eliminate duplicates from emails, task diaries, notes, calendars, and contacts using the BCC, CC, Subject, Email Address, Categories, and many other field options.

Final Words!

It is common knowledge that many users set up their MS Outlook accounts utilizing the IMAP protocol. However, low productivity or an excess of mailbox data might be caused by twice sent items in Outlook or IMAP accounts. Users should therefore make sure that duplicate sent items are deleted from the Outlook sent folder. That's why we covered the best way to protect your account from duplicate entries in the post above.