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SysTools Outlook Duplicates Remover
Tool to Remove Duplicate Email Items from MS Outlook PST Files & Folders

(Average Rating 4.6 Based on 117 Reviews)
  • Deduplication of emails, contacts, calendars, journals, tasks, notes
  • Options to delete duplicates within the folder
    Tool will check & remove the duplicacy from a particular folder in an Outlook PST File
    and across the folder
    Tool checks & remove the duplicate items from all folders in PST File.
  • Remove duplicate emails from multiple Outlook PST files in batch
  • Easy to filter out redundant mail items in Microsoft Outlook.
  • No File Size Limitation: Supports Both ANSI & UNICODE File Types
  • Make report for unique & duplicate items in .csv extension.
  • MS Outlook should be installed and set as the default email client
  • Tool Support MS Outlook 2016 (32 / 64 bit) & All Below Versions
    Outlook Duplicate Email Remover tool compatible with 2003, 2007, 2010, 2013 and 2016 (32 / 64 bit Versions)
  • Outlook Duplicate email remover supports Windows 10 (32-bit & 64-bit).
    Outlook Duplicate Remover supports Windows 10, 8.1, 8, 7 & other below versions

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Purchase Now $29 windows 10 & outlook 2016

Free Live Demo - SysTools Outlook Duplicate Remover Fully Secured Download Version

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The Software Informer had given SysTools Outlook Duplicate Email Remover 100% clean & secure award for its outstanding performance.

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SysTools Outlook Duplicate items remover application gets 100% clean award by Soft Suggest for delivering Ad/Virus/Spyware free solution.


SysTools Outlook 2013 duplicate remover had got the 5 stars rating from Cnet for the best working.


Soft32 had given SysTools Outlook Duplicate items remover 5 star rating for being the most effective & efficient product to clean up Outlook duplicate items.

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List of Key Features in SysTools Outlook Duplicate Remover

batch data deduplication

Batch Data Deduplication

The Outlook Duplicates Remover software allows you to eliminate the duplicates from multiple MS Outlook PST files at once. You can add a folder having multiple PST files in it and software will remove duplicates from each PST file as well as the folders in it.

remove duplicates item

Remove Duplicate Emails in Outlook

It is possible to cleanup the duplicates from all items within Outlook PST file. You can delete the duplicate items from emails, contacts, calendars, tasks, notes, journals. If required, you can check or uncheck the items for selective data deduplication.

option to remove duplicates

Options to Remove Duplicates

The software allows you to eliminate duplicates from multiple PST files in two ways.

  • Remove duplicates within folder
  • Delete duplicates across folder

option to remove duplicates

Lists Files with Attributes

The software allows you to add multiple PST files at once. You can see all the listed PST files on the software interface along with its attributes like: File Name, File path, status, duplicates found and the name of item.

show deduplication status

Show Deduplication Status

Once you add the PST files for data deduplication, it will show you the current status of each file. Now once the software starts removing duplicates from the folders, it will show you the status as complete with the number of items processed.

create new store folder

Create New Store Folder

While removing duplicates emails & other items from the PST file(s), you will be asked to choose a desirable location. You can save the file at any desirable location and save the PST file. Also, if required; you can make a new folder to save the output files in it.

create new store folder

Supports Outlook 2016 & Below Version

Outlook Duplicate items remover support to the latest Outlook version. The tool clean up duplicate items from Microsoft Outlook 2016, 2013, 2010, 2007, 2003.

create new store folder

Export Duplicate Free PST file in CSV

PST duplicate remover tool generate two different report in .csv file extension. The software exports one duplicate & one final report so that you can differentiate your replicated files as well as original files.

Outlook Duplicate Remover Tool Screenshots

outlook duplicate remover tool
Step 1: Run Outlook Duplicates Remover Tool
add outlook pst files
Step 2: Add PST Files & Folder in the Software Panel
Duplicate Option(s)
Step 3: Duplicate Option(s) to Remove Outlook Duplicates
remove duplicate
Step 4: Click on "Remove Duplicates" to Delete Duplicates

Watch Live Video of Outlook Duplicate Remover

Download Outlook Duplicate Remover Software

Outlook duplicate remover

Size: 6.3 MB Version: 3.0


Trial Limitations

Trial version of Outlook Duplicate Remover software is capable to remove duplicates from 15 items per folder.

Download Outlook Duplicate Remover

Installation Uninstallation EULA

System Specifications

  • Processor : Intel® Pentium 1 GHz processor(x86,x64) or equivalent
  • RAM: Minimum 2 GB of RAM
  • Hard Disk Space: 100 MB of free hard disk space for installation

Application Pre-Requisites

  • Microsoft Outlook(32-bit or 64-bit) should be installed and configured for a valid or dummy POP3 profile (Not Configured for Exchange).
  • If you are using Window 10/8.1/8/7 or Vista, then please launch the tool as "Run as Administrator".

Supported Editions

  • Microsoft Windows – 2000, 2003, 2008, XP, Vista, or Windows 7/8/8.1/10 2008/2012 (32-bit & 64-bit)
  • MS Outlook – Outlook 2000, 2003, 2007, 2010, 2013, 2016 (32 / 64 bit Versions)
Frequently Asked Question

Can you please elaborate me the working of Outlook Duplicate Email Remover tool?

Step by Step Guide to Remove Outlook Duplicates:

  • Free Download and Run Outlook Duplicate Remover.
  • Click on "Add File(s) or "Add Folder" to open PST file.
  • Select Category to Remove Duplicate Emails, Contacts, Calendars, Journals, Tasks and Notes
  • 2 option to delete duplicate items: Within and Across Folder.
  • Browse Location to Save duplicate free PST file
  • Click on Remove Duplicate button.

How can I remove multiple numbers of duplicate emails?

SysTools Outlook Duplicate Remover is a very efficient and reliable tool which is capable of removing 'n' number of duplicate emails from a respective Outlook mail profile.

Do I need to install Outlook on my machine before using this tool?

Yes, Outlook should be installed on your performing machine and it should also be configured any of the two profile types; POP3 or dummy. However, the version of Outlook (32-bit) could be any.

Does the software removes Duplicate Emails and Calendars from Outlook (PST) files?

Yes, the tool removes duplicate emails from Outlook, as well as it eliminates calendars, contacts, journals, tasks and notes.

Are duplicates checked for in a single folder or across multiple folders?

As a matter of fact, Outlook Duplicate Remover software checks for duplicates in both ways; within a folder and across folders for detecting all types of duplicate items such as; emails, contacts, calendars, etc.

Does software remove duplicates from a specific size of PST file only?

No, there is no such file size related limitation within software. You can remove duplicates emails in Outlook from any size of PST file successfully.

Are any changes made to the source PST file after processing it?

No, Outlook Duplicate Remover software is built with advance algorithms that ensure not to modify source PST file. It rather creates a new PST file at a destination location of your choice with no duplicates.

Is there any limitation in demo version of Outlook Duplicate remover for deleting duplicacy across the folder?

Yes, the demo version of Outlook PST duplicate tool eliminates only 15 items per folder.If you want to delete more than 15 items, you have to purchase SysTools Outlook Duplicate Remover Tool.

Can I remove duplicate calendar entries from Outlook 2016?

Yes, Outlook duplicate calendar remover eliminates duplicate calendar items of MS Outlook version 2016,2013, 2010, and 2007.

Is there any file limitation to remove redundant emails from Outlook?

There is no such file limitation for deleting duplicate items from PST files.

Can I remove duplicate contacts from Outlook 2016 using PST Duplicate Remover tool?

Yes, Outlook Duplicate contacts remover tool is capable to clean up duplicate items from Microsoft Outlook 2016 as well as 2013, 2010, 2007, 2003.

Outlook Duplicate Remover Order Now

Get an Overview of Outlook Duplicate Remover Features - DEMO and Licensed Version

Features DEMO Version FULL Version
Add Outlook Files & Folder
Preview List of PST Files
Select Categories (Emails, Calendars, Contacts etc.)
Remove duplicates within the Folder(s)
Remove duplicates across the Folder(s)
Windows 10, 8 & All Other Previous Windows Version Supported
Export Duplicates Free Outlook PST Files 15 Items / Folder
Cost FREE $29
SysTools Outlook Duplicates Remover Order Now
Full Version



Outlook Duplicates Remover






OFFER Valid Till 30th April

Outlook Duplicates Remover + Outlook Recovery + PST Password Remover




$127   $79

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Note: The final price of software may be subject to sales tax depending upon your residence. The "Estimated Sales Tax" is displayed at the time of Check Out when you confirm the order.

Software will get delivered on your registered email id, within few minutes after placing the order.

Electronic Delivery: The delivery of product is automated. You will receive an email containing both the link to download the product and the activation key within few minutes after payment confirmation.

Purchase Order: You can place the order via Purchase Order(PO) Click Here

amazon        CR        NSIC         CIO       BBB
License Information Personal License Business License Enterprise License
File Limitation Remove Unlimited Outlook Elements Delete Unlimited Outlook Elements Eliminate Unlimited Outlook Elements
24×7 Technical Support Unlimited Unlimited Unlimited
Free Product Updates
30 Day Money Back* Yes, Money is refundable Yes, Money is refundable Yes, Money is refundable
Features in Demoware & Commercial License

An Overview At The Contrast between Trial & Purchase License

Outlook Duplicates Remover DEMO Version FULL Version Bundle Offer
Remove Duplicates in batch
Add multiple PST file
Remove duplicates from all items
Remove duplicates across folders
Outlook Recovery
Add Outlook PST File
Preview PST File components
Quick and Advance Scanning Mode
Export Outlook File to PST, EML or MSG

Frequently Asked Questions

Listed Commonly Asked Questions and Answers

What Clients Say

Thanks to the developers who developed Outlook Duplicate Remover tool so that the Outlook management become much easier and systematic. The format of creating a new PST file with the duplicate data removed from PST folder is a much appreciable quality that makes users confidence much higher.

Thomas Dikrose, Sweden

The moment we started dealing with duplication issue of data in our Outlook account, we thought of getting rid of it. After thorough investigation it was found that, assigning rules was the reason behind it. Thanks for removing replicated emails in Outlook, we were able to delete existing duplicates without any efforts made

Dan Torreto, Tokyo

All Thanks to “SysTools Outlook Duplicates Remover” the software is just amazing, It can easily delete duplicate emails from Outlook 2016.Was confused due to duplicated emails.PST Duplicate Remover tool sorted my problem...!!!

Nicole James, USA

It leads to a lot of confusion when I discovered that values in my Outlook 2013 account were replicated, Finally found the “SysTools Outlook Duplicates Remover” software. It helped me to clean up my duplicate email items from MS Outlook. Also it was helpful in making my data duplicacy proof. Kudos to “SysTools”!!!!

Michael Morrison, Europe

I was muddled due to the duplicacy found in my Outlook items. PST Duplicate email remover becomes my rescuer and helped me to clean up duplicate emails within and across the folders. The process is so simple. Thankyou SysTools!!

Anthony L. Moore

Outlook Duplicate email remover is worth buying! I was worried as I have to delete duplicate email items in Outlook 2007 in batch of PST file and the tool helped me in eradicating duplicate items in Outlook 2007 at once.

Gregory K. Tindell

This is the best Outlook 2016 Duplicate remover tool which removes my replicated items with an ease and provides me an option to save my duplicate free PST Files at my desired location.

Kristi Conant
  • Hi I am using Outlook version 2003. Does Outlook Duplicate email remover works for this version? If yes,Can you guide me how to delete duplicate emails from Outlook 2003 version?

    Hazel Hodges

    Database Administrator, USA

    Reply for Comments

    • Yes, the tool supports MS Outlook version 2003. Perform the following steps:

      1. Copy your PST file and browse it on software to eliminate duplicates in pst file.
      2. Add your Outlook pst file or folder to the software.
      3. Browse your desired location for saving unique PST files.
      4. Click 'Remove Duplicates'.
      5. Outlook Duplicate email remover gives you two different reports exported in .csv format. You can see separate Duplicate & Final report.

      Barry Reese

      Developer, USA

  • My list of reminders in calendars got doubled suddenly and I got confused due to replicated reminders.Do PST duplicate remover eliminate duplicate calendar entries?

    John D. Martines


    Reply for Comments

    • Yes, Outlook duplicate remover deletes duplicate calendar entries from Outlook version 2016, 2013, 2010, 2007, 2003.

      Barry Reese

      Developer, USA

  • How can I distinguish my original PST and duplicate email files in Outlook duplicate remover tool?

    Andrea Williams


    Reply for Comments

    • After scanning process, you will get two different reports in .csv extension. One is of Duplicate & other is of Final Report. From there, you can differentiate your duplicate as well as original email items.

      Barry Reese

      Developer, USA

  • I want to remove duplicate tasks in Outlook 2010? Does the Outlook Duplicate Remover tool capable of doing this?

    Sarah Baum


    Reply for Comments

    • Yes, you can delete duplicate tasks from Outlook 2016, 2013, 2010, 2007,2003.

      Barry Reese

      Developer, USA

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