Duplicate Email Remover for Windows

Name: Duplicate Email Remover
Rating: 2.9 (15 reviews)
Author: MAPILab

By MAPILab
Trial version
User Rating

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Editors’ Review

Download.com staffFebruary 26, 2026

This Outlook add-in effectively identifies and processes duplicate emails and posts across single or multiple folders, offering flexible handling options for found items.

Pros
- Searches for duplicates within single or multiple folders.
- Handles both emails and posts.
- Offers options to mark, delete, copy, or move duplicates.
- Includes a priority system for cross-folder duplicate resolution.
- Compatible with Microsoft Exchange and other user mailboxes.
Cons
- Requires manual processing for each duplicate set.
- No automatic duplicate deletion without user action.
- Functionality is limited to Outlook desktop application.

Duplicate Email Remover for Windows

By MAPILab
Trial version
User Rating

Download now

Used Duplicate Email Remover for Windows?

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Full Specifications

GENERAL

Release: July 10, 2017

Latest update: February 26, 2026

Version: 3.2

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows NT
Windows XP
Windows 2003
Windows 8
Windows 7
Windows 98
Windows 10
Windows Vista
Windows Server
Windows ME
Windows 2000

Additional Requirements: Microsoft Outlook 2002 or up

POPULARITY

Total Downloads: 34,339

Downloads Last Week: 7

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Last Updated

User Reviews

2.9/5

15 User Votes

Deleted several thousand unique mails and a few dupes.
RocketDaneDecember 12, 2013
Pros
I cannot find any.
Cons
I strongly advise everybody to stay away from this product. It sent more than 2.700 of my unique emails to deletion - and that was the trial version that was supposed to not touch more than 10 mails at a time. I did not run it 270 times... It completely messed up my mailbox even though I ran it at the recommended, supposedly safe settings. My pst-file is huge and contains many old mails that have been imported through my Office updates but this program indiscriminately deleted both old and new.
Summary
Possible Virus!
smithy925November 28, 2012
Pros
When I hit the download button, ESET warned me that there may be a virus attached to this program. CNET needs to check this. Downloader beware!
Cons
Possible virus!
Summary
I doesn't work
mharbuttSeptember 22, 2009
Pros
none at all
Cons
It doesn't work.
Summary
It doesn't work.
Looks good but Free-Trial is useless
SuperyaldaOctober 5, 2008
Pros
Turns out I have 18000 emails with 8000 of them duplicates! The program ran through them pretty quickly, with a visual running list so you can "check as you go." Easy to use and comprehensive but ...
Cons
The Free Trial only deletes 10 emails at a time, which is pretty lame. I'd like to see how it really works.
Summary
Works great, registration problems.
alyanmJanuary 30, 2008
Pros
Once I finally got this working I found it was pretty much exactly what I needed. It provides a nice easy toolbar button to run the duplicate checker. Set it up to scan the folders you want duplicates removed from, tell it what to do with the duplicates and let it rip.
Cons
Had a lot of trouble getting it to accept my license key after I purchased it, went around with their support over a few days and eventually discovered that the version I just downloaded was an old version which was not compatible with the key I just purchased (??) They gave me a direct download link to latest version and voila!<p>I'm also not so fond of the folder selection interface, I'd really like to see an easy button that just checks the currently open folder for duplicates. This is really a very minor complaint though, if it had worked right away (or at least been fixed by their support team within 24 hours) I probably would be giving this 5 stars.
Summary
Excelent
PabloricardogOctober 25, 2007
Pros
Cons
Summary
It works as I expect, no problems encountered
nealmiller1August 23, 2007
Pros
Since eliminating the problem of receiving duplicate email messages via a POP3 email account at its source is not feasible, a good workaround that I've just found is MapiLab's Duplicate Email Remover Program. It scans the individually selected Outlook Folders, and moves the duplicates to a new "Duplicate Emails" folder that I've created. On a new dual-core centrino computer under Windows Vista Ultimate and Outlook 2007, it takes approx. 2 minutes to scan over 2000 messages, and move any duplicates found. <p> <p>I do have a library of 30,000+ outlook email messages that I've accumulated over 5 years amongst various archive .pst files, and it did take over 30 minutes to scan all of it. It did track down about 1500 dups, and moved them to the duplicate folder. I am pleased with it, and at $15 for a single-user license, the price is right.
Cons
Summary
Easy to use!
GargantulaJuly 12, 2007
Pros
Fast and easy to use. It got the job well done. It has many options and works very well. I purchased it!
Cons
Cheaper. Inlude their other duplicate program to search for other duplicates together with this program. I think it is pointless to have two separate plug-ins other than to make more money.
Summary
why are the other reviews hidden ?
hippypinkJune 10, 2007
Pros
Cons
Summary
sad
JasonSmugDecember 9, 2006
Pros
works
Cons
will only delete 10 per session....sux sux sux....i hate you guys and i hope u fail....
Summary

Developer’s Description

By MAPILab

Delete duplicate e-mails and posts in Outlook and Microsoft Exchange folders.

Duplicate Email Remover is powerful and flexible tool intended for the search and processing of duplicated mail messages in Microsoft Outlook folders. Add-in processes both e-mail messages and posts in mail-type Microsoft Outlook folders. You can use Duplicate Email Remover to find mail message copies both in one folder and in different folders. A duplicate message found can be: marked with a flag, deleted, copied or moved to any folder you choose. So, you can easily test the add-in and preview the messages to delete. A priority system in the add-in is used when you search for duplicates across several folders. Using the priority system, you can specify, for example, that of the two identical messages stored in the folders "Important Letters" and "Temporary Folder", it is the message from the temporary folder that should be considered the duplicate and hence needs to be deleted (marked, moved). Duplicate Email Remover is fully compatible with Microsoft Exchange Server and may be used to process public folders on a server. Also, if you have permission to connect to mailboxes of other users, you can process mailboxes of other users as well as your own mailbox. Works as an add-in for Microsoft Outlook 2016, 2013, 2010, 2007, 2003, 2002/XP; Microsoft Office 365 with desktop Outlook version.

Duplicate Email Remover for Windows

Editors’ Review

Pros

Cons

Duplicate Email Remover for Windows

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User Reviews

Deleted several thousand unique mails and a few dupes.

Possible Virus!

I doesn't work

Looks good but Free-Trial is useless

Works great, registration problems.

Excelent

It works as I expect, no problems encountered

Easy to use!

why are the other reviews hidden ?

sad

Developer’s Description