SysTools
Outlook Duplicates Remover Tool

Certified Outlook Duplicate Remover software to remove Outlook PST / OST / BAK duplicates with complete accuracy. Download this trusted utility to enhance MS Outlook performance without altering original data integrity.

  • De-Duplicate Emails, Contacts, Calendars, Journals, Tasks, and Notes Accurately
  • Within Folder(s) and Across Folder(s) Mode to Delete Duplicates from Outlook
  • Provide Removal Action: Permanently Delete, Move to Folder, Flag, Mark as Expired
  • Scan & Delete Duplicates from Multiple Outlook PST, OST, and BAK Files at Once
  • Supports to Remove Duplicate Items Without Installing MS Outlook
  • Allows to Delete Duplicate Items from Password Protected Outlook Files
  • Draw Out Outlook Duplicate Items Within a Custom Date Range
  • Advanced Option to Easily Remove Duplicates of Selected Category Items
  • Offers Option to Break Oversized File Size by 10 MB to 200 GB.
  • Remove or Remove All Outlook Files and Folders that were Added Accidentally
  • Preserves Outlook Folder Hierarchy While Deleting Duplicate Items from Outlook
  • Launch Application as Standard/Guest User Without Admin Privileges
  • Exports Quick CSV Report for Unique & Deleted Duplicate Items
  • Outlook Duplicate Remover Software Supports All Versions of Windows and Mac OS

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

Also Available for Mac OS

outlook-duplicate-remover

(Average Rating 4.7 Based on 1188 Reviews)

For Win

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For Mac

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SysTools Outlook Duplicate Remover Software

What All Advanced Features Are Offered by SysTools Outlook Duplicates Remover Tool

  • Add PST file in bulk using software files or folder mode.
  • Search File option to add file from any drive of your system.
  • Easily remove an unwanted file from the de-duplication list
  • Option to clear the entire list added mistakenly.
  • Exclude checked emails, trash folder for de-duplication.
  • Save resultant file at desktop location by default.
  • Provision to change the destination location from software.
  • Remove duplicate on the basis of 14 email properties.
  • 14 contact properties available to remove contacts.
  • Process calendar duplicates using 13+ calendar properties.
  • Draw out Task duplicate on the basis of 14 task properties.
  • De duplicate Notes using 5 Notes properties.
  • Use 12 Journals properties to remove duplicate from journals.
  • Permanently remove duplicates and keep single copy.new
  • Date Filter to remove old and current duplicate data.
  • 5 Actions that can be taken on duplicate items.
  • TXT report of selected categories in de-duplication process.
  • Delete duplicates from Password Protected PST/OST files.
  • The tool supports ANSI and UNICODE Outlook data files.
  • Remove duplicates from Outlook archive file easily.
  • Preserve meta and folder hierarchy during de-duplication.
  • Maintains data integrity during duplicate removal process.
  • Support all the versions of Outlook including Outlook 2024.
  • Option to divide oversized data file by 10 MB to 200 GB.
  • Generate a report of success count after de-duplication.
  • Standard user can run the tool without Admin Privilege.
  • Navigate to the destination location direct from software.
  • Save settings in specified duplicate data criteria.new

Awards & Reviews of SysTools Outlook Duplicates Remover

An Advanced Outlook Duplicate Remover Tool for Your Ease

Outlook Duplicate Remover Tool - Watch Video

Best and Trusted Software to Delete Duplicates from Outlook Mailbox. This Video will Help Users to Understand its Working Steps.

  • Step 1: Install & Run the Outlook Duplicate Remover Tool by SysTools.
  • Step 2: Press on "Add File and Folder" option to upload PST files.
  • Step 3: Choose Category to remove duplicate Outlook items.
  • Step 4: Browse Location Path to where you want to store cleaned file.
  • Step 5: Click Next button to start removal process.

Outlook Duplicate Items Remover Software

Standalone Tool to Delete Duplicates from Outlook Mailbox Without Installing

duplicates options

Two Ways to Delete Outlook Duplicates

  • Remove Duplicates from Single Folder: If you want to find and clean up duplicate from same folder, check this option. Outlook Duplicate Remover Tool will analyze each folder separately and remove all located duplicates. It is useful when you do not want to delete duplicates across all folders of Outlook data file.
  • Delete Duplicates Across Outlook Folders: If you think duplicates are distributed into multiple folders of PST file, go for the Across Folder(s) option. The software will analyze all PST file folders and eliminate duplicates from them. It is usable to remove duplicates from all folders at once.

various action mac

Different Action to Draw Out Duplicates

SysTools Outlook duplicate remover software provides multiple options. Users are allowed to choose any one at a time.

  • Delete Permanently: This option will give you the facility to permanently remove duplicates from your PST/OST/BAK files.
  • Move to Deleted Item Folder: By opting this option one can move their duplicates items into Outlook deleted items folder.
  • Move to Folder: This feature gives you the option to create a folder in PST file and move all duplicate items in it.
  • Put Flag: It is a remarkable feature to put a flag in to duplicate Outlook items. So, user can take action later.
  • Mark as Expired: Using this option from software UI user can mark as expire your duplicate items.

List of Various Data Items Properties

Microsoft Outlook Duplicate Items Remover Allows User's to Choose Following Properties

mac pdf unlocker

Reasons to Trust SysTools Mac Outlook Duplicates Remover

If someone is dealing with duplicates in Outlook on Mac, download SysTools Mac Outlook Duplicate Remover Tool, an effective and smart solution to remove duplicates from Outlook OLM files on Mac while maintaining data structure. This advanced software allows users to clean duplicates from multiple mailboxes without installing Outlook on Mac. Look below for its working steps.

  • Install and run SysTools Mac PST Duplicate Email Remover on macOS.
  • Choose "Add Files or Folder" for uploading Mac PST or OLM files.
  • Select Category Items to eliminate duplicates from Mac Outlook.
  • Browse the Destination Path to save resultant duplicate free files.
  • Finally, tap the Next button to start the deduplicating process.

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Prominent Features of Outlook Duplicates Remover Tool

Handy Utility for Outlook Duplicate Cleanup Tool 2024, 2021, 2019, 2016, 2013, 2010, 2007, 2003

batch data duplication

Batch Data Deduplication

SysTools Outlook Duplicate Remover Software allows users to remove duplicates from bulk Microsoft Outlook OST/PST/BAK files at once with ease. Users can add data folder containing multiple PST & OST files and software will delete all duplicate items from each file.

remove duplicate from pst

Search for PST/OST Files on Local Drives

This Outlook Duplicate Cleaner software provides a search feature to find Outlook PST & OST files on the local hard disk. Users can either look for their Outlook data files in an individual logical drive (C: D: E:) or all drives at once for an effective duplicate removal process.

batch data duplication

Outlook Duplicate Items Removal

SysTools Outlook Duplicates Remover software is a user-friendly utility that allows users to remove duplicate items like emails, contacts, calendars, tasks, notes, and journals, using several advanced parameters for each duplicate item.

dual mode to delete duplicates

Dual Mode to Remove Duplicates

SysTools Outlook Duplicate Remover tool has two modes for duplicate cleaning methods. Within Folders feature enables users to remove duplicates from within a single folder. Whereas Across Folders mode is preferable for removing duplicates across the selected PST/OST folder.

different options to include and exclude folders

Include or Exclude Specific Folder/Category

On the software interface, there are provisions to include required folders or specific categories for duplicate erasing process. Not required folders (Junk/Spam/Deleted Items, etc.) and categories can be excluded from duplicate cleaning process.

multiple actions on duplicates

Multiple Actions to Remove Duplicate Items

This Outlook PST Duplicate Email Remover tool provides various actions to remove duplicate emails in Outlook PST and OST files, like Delete Permanently, Move to a Folder or Deleted Items folder, Put Flag, and Mark as Expired.

reduce outlook data file size

Reduce Oversized PST/OST Files

This Outlook Duplicates remover software comes Split PST File option. So, one can reduce the PST/OST file size during the process of removing duplicate from Outlook data file. Users can split output files up to 200 GB.

multiple data filter

Custom Date Range Filter

SysTools Outlook duplicate items remover comes with a Date Filter option. This date filter option gives users a flexibility to delete duplicate from any date range. In fact users can add multiple date ranges and remove duplicate between that specific data range.

preserve meta properties

Preserve Meta & Item Properties

Outlook Duplicate Remover software maintains accuracy of data and attributes while removing duplicates. Users will get same data with all its associated attributes such as To, Cc, Header, Bcc, Message Size, etc. in resultant file.

save download report

Maintain Original Folder Structure

This Duplicate Remover Tool for Outlook will maintain PST/OST folder structure while draw out duplicates data items. After removing the duplicates, users will find same folder structure in resultant PST/OST file.

preserve meta properties

Save & Reuse Settings for Duplicate Criterianew

SysTools Outlook duplicate remover tool offers an advanced option to save settings for specific duplicate criteria that allows users to reuse same configured rules. It allows users to avoid reselecting same settings.

save download report

Keep One Copy & Delete Duplicate Copiesnew

This software allows users to choose actions such as permanently deleting duplicates, putting up a flag, marking duplicates as expired, and moving all duplicates to the deleted items folder while keeping a single copy with them.

show deduplication status

Show Deduplication Status Tracking

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 duplicate from Outlook folders, it will show you the status as complete with the number of items processed.

generate reports

Export TXT/CSV Summary Reports

SysTools Outlook Duplicate Remover Tool will generate a .txt file report that shows the criteria you have selected for removing duplicate items from the Outlook PST/OST file. It creates CSV report having duplicate counts, export counts, failed counts, and failed items list.

run with or without admin

Run With or Without Admin Privileges

One of the most amazing features of this Outlook Duplicates Remover tool is that admin/standard/guest users can run it with admin rights. However, if standard/guest users don't have admin rights, they can also run tool without admin privileges.

supports latest outlook

Compatible with Outlook 2024 and Earlier

Outlook Duplicate Items Remover supports latest Microsoft Outlook version. The tool removes duplicates from Outlook 2024, 2021, 2019, 2016, 2013, 2010, 2007, and 2003. Users can upload PST file of any MS Outlook version to remove duplicates in few clicks.

Outlook Duplicates Remover Software - Specifications

Make Sure to Have All Required Hardware and Software to Download and Install This Software

outlook-duplicate-remover

(Windows OS)

Name: SysTools Outlook Duplicate Remover
Version: 6.0
Size: 21.7 MB
MD5: b9b9216d13b185526979f0b23c9c51db
Delivery: Free via Email
Free Version: Download Now

(Mac OS)

SysTools Mac Outlook Duplicate Remover
6.0
61.9 MB
8c5b69e6c86c159ef76865832757194a
Free via Email
Download Now

Trial Limitations:		 (Windows)

Free trial version of SysTools Outlook Duplicate Remover software is capable to remove only 15 items per folder.		 (Mac)

Demo version of Mac Outlook Duplicates Remover software is capable to remove duplicates from 15 items per folder.
(Windows) (Mac)
Hard Disk Space: 100 MB of free hard disk space required 100 MB of free hard disk space required
RAM: 4 GB of RAM (4 GB is recommended) 4 GB of RAM (4 GB is recommended)
Processor: Intel® Core™ 2 Duo CPU E4600 @ 2.40GHz 2.39GHz Mac Computer with Intel Processor
Mac Computer with Apple Silicon (Apple M1)

Platforms:		 (Windows)

 Windows 11 (64 bit), 10, 8, 7 (32 bit or 64 bit) & Windows Server 2019, 2016, 2012 R2, 2008 Compatible with Microsoft Outlook 2000, 2003, 2007, 2010, 2013, 2016, 2019, 2021, 2024 (32/64 bit)		 (Mac)

MacOS X 10.8 (Mountain Lion), MacOS X 10.9(Mavericks), MacOS X 10.10 (Yosemite), MacOS X 10.11 (El Capitan), MacOS X 10.12 (Sierra), MacOS X 10.13 (High Sierra), MacOS X 10.14 (Mojave), MacOS X 10.15 (Catalina), MacOS X 11.0 (Big Sur), MacOS X 12.0 (Monterey), MacOS X 13.0 (Ventura), MacOS X 14.0 (Sonoma), MacOS X 15.0 (Sequoia) and above versions.

Application Pre-Requisites:

(Windows)

  • Microsoft .NET framework 4.5 or above should be installed.

(Mac)

Product Guide:

(Windows)

(Mac)

User Control

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Outlook Duplicate Remover - Feature Comparison

Get an Overview of Outlook Duplicates Remover Software - Free & Full Edition
Features Free Version Full Version
Add Multiple Outlook PST / OST / BAK Files
Preview List of Data Files
Standard/Guest Users Run without Admin Privileges
Remove Duplicates from Password Protected Files
Select Categories (Emails, Calendars, Contacts etc.)
Remove Duplicate from Outlook Within Folder(s)
Delete Duplicates Across the Folder(s)
Option to Divide Huge Outlook Data Files
Support Windows 11, 10, 8 & All Previous Windows Version
Export Duplicates Free Outlook PST File 15 Items / Folder
Cost FREE Starts At $49
24/7 Technical Support

All Queries Covered About Outlook Duplicate Remover Tool

How Do I Get Rid of Outlook Duplicate Items?

Outlook Duplicate Remover Preview

Step by Step Guide to Remove Duplicates from Outlook:

  1. Download and Run Outlook Duplicate Remover.
  2. Choose "Add File(s) or "Add Folder" to add PST file.
  3. Select any: Within and Across folder to delete duplicates
  4. Select Category to Remove Duplicate data items.
  5. Browse Location to Save duplicate free PST file.
  6. Click on Next button to Start Removal Process.

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

No, Outlook installation is not mandatory to operate this standalone tool. One can easily clean up duplicates from Outlook PST files without installing Microsoft Outlook.

Yes, you can instantly and effectively delete duplicates using the SysTools Outlook Duplicates Remover Tool. As it offers an Add File and Folder option where you can upload a whole PST folder.

Yes, this tool removes duplicate from Outlook, as well as it eliminates emails, contacts, journals, tasks, notes, including attachments.

Outlook Duplicate Remover software checks for duplicates in both ways which is within folder and across folders to detect all types of duplicate items like emails, contacts, calendars, etc.

Yes, SysTools Outlook Duplicate Items Remover is the best tool to remove duplicates in Outlook from any size of PST file successfully.

No, the Outlook Duplicate Cleaner software is built with advanced algorithms that ensure the source PST file remains untouched. It rather creates a new PST file at a destination location of your choice with no duplicates.
Free demo version of Outlook duplicates remover tool will eliminates only 15 items per folder. If you want to delete more than 15 items, you have to purchase SysTools Outlook Duplicate Remover Tool.
Yes, Outlook duplicate remover eliminates duplicate items of MS Outlook version 2024, 2021, 2019, 2016, 2013, 2010, and 2007.
There is no such file limitation for deleting duplicate items from PST files.
There are several reasons that make users remove duplicate items. All of them are listed below:
  • Outlook Performance Degrades
  • Outlook Becomes Slower
  • Lower Productivity
  • Unnecessary Storage Space Issue
Yes, Outlook Duplicate Items Remover tool is capable to deduplicate contacts from Outlook.
No, once the duplicates are removed using this remover software, then it cannot be undone. But user can use SysTools Outlook PST recovery tool to get back deleted data.

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