Removing Outlook duplicate contacts, emails, and more

Duplicate Killer for Microsoft Outlook 2010-2003


Your Outlook performs slowly due to multiple duplicate items in emails, calendar events, journal, tasks, and notes. Your Address Book is stuffed with useless contacts. All you need is your Outlook to be clean and fast, and your contacts to contain the actual details. A smart tool for removing Outlook duplicates would be just to the point.


Save time and effort by using Duplicate Killer for deleting duplicate and junk contacts. This Outlook plug-in can identify, delete, and merge all dupes in your messages and contacts, Outlook calendar events and appointments, as well as tasks or notes. You can run Quick or Advanced Wizard. It is possible to delete, move the found copies to another folder, back them up, or simply flag them.

Search and remove Outlook duplicate contacts, emails, calendar items, tasks and notes.

Duplicate Killer key features

What to do with found duplicates.

It can be really frustrating to deal with numerous duplicates in Microsoft Outlook. Luckily, Duplicate Killer can clean up your folders automatically while you are busy with more important tasks.

  • Look for different types of duplicates across multiple folders
  • Select item properties for comparison
  • Delete, move, flag, or assign a category to the found items
  • Scan Inbox automatically
  • Use Simple or Advanced Wizard
  • Merge duplicates in Outlook
  • Delete copies of calendar events
  • Search and delete useless contacts in Outlook
  • Detect and save original items
  • Save settings as a Profile
  • Get advanced search report
  • Back up duplicates

How Duplicate Killer for Outlook works

Select properties to be compared for duplicates.
Additional options: review duplicates before processing etc.
Merge data from found duplicated items.
Search for duplicates report.

Duplicate Killer fixes the slowness problem with Outlook by removing duplicates in different types of folders. With its help you can compare, edit and merge Outlook contacts and other items without copying and pasting. After the duplicated items are found they can be categorized, flagged, deleted, or moved to the selected folders. It is also possible to preview duplicate search results before processing.

Duplicate Killer is compatible with Windows 8, 7, XP, Vista, and 2000. You can install it to Microsoft Windows Server 2003 and 2008. The add-in supports Outlook 2013, 2010-2000 as well as Office 365. Use this helpful product to find duplicate records in Microsoft Exchange, Public, or Outlook folders.

Select Outlook folders and define properties for comparison

With Duplicate Killer you can search for duplicated items in all Microsoft Outlook folders, including Calendar events, Journal objects, Notes, Drafts, Emails and RSS feeds. After you run the wizard and pick the folders for searching, you can choose to scan each folder separately and identify copies in distribution lists of the Contacts folder(s).

When you look for duplicates in Outlook you need to select the parameters for comparison. On the second step of the add-in wizard you can pick the fields by which the tool will identify copies. These can be Full name, Attachment, Primary phone or Middle name. E-mail, First Name and Last name are selected as default item properties.

Manage found items: move, copy, merge, or delete

Duplicate Killer for Outlook searches for copies in your folders and offers several ways for managing the found items. It is possible to delete duplicates permanently or you can choose to back them up to the folder with the Deleted items. If you want to process the copies or review them, you can select any folder to which they will be moved. To make the found items visible in the folders, just flag them or assign an Outlook category. Finally, Duplicate Killer allows merging the dupes according to the selected settings.

Combine duplicates in Outlook

Besides removing copies, Duplicate Killer allows you to merge duplicates in Outlook emails, contacts, etc. You can view dupes side-by-side and quickly combine several duplicated records into one.

This helpful tool will easily fill in the missing details in emails, contacts, tasks, appointments, journal items and notes. Select the simple merging mode to automatically join copies. You can also select the advanced merge wizard to combine the items manually for the best results. Advanced wizard makes it possible to combine as many as five selected duplicate records, pick the properties to include into the final item, preview and edit the results before saving. One more task it can help you with is removing identical calendar events.

If you import or synchronize Calendar items into Outlook, duplicates can occur if some items already exist in the Calendar folder. This often happens with all-day events such as holidays and birthdays. Duplicate Killer effectively combines all identical Calendar events. Besides, it can convert 24-hour formatted events into all-day ones.

Remove junk contacts from Outlook

Do you have too many contacts that are not complete? Usually, they get to your Outlook contacts either by mistake or they appear there automatically during synchronization. You can use Duplicate Killer's Clean up Junk Contacts wizard to quickly detect and delete useless Outlook contacts.

Those address book records that contain information only in one of the important fields, like the name or email, are considered redundant. All you need is select a folder and run the wizard that cleans up Junk Contacts. A few seconds later you'll get a report with the found items. Then you can review, edit, delete, or save the selected found contacts.

The items that don't contain enough details are grouped when presented so you can edit any contact. If you update some record, it will automatically be saved to Outlook contacts, while those remaining unmodified are deleted.

Find and save original records

This smart add-in compares identical items and determines the original record. It considers the record original if it has more fields, in case it was modified later, or if it is older. You can choose to compare them by location, start time, subject, etc. Also, the software supports Outlook categories and you can assign a category to a duplicate item.

Keep settings in a Profile

If you often select the same settings, you can save them as a Profile. Profiles let you manage duplicates, and find the one you need in a click. Active profiles are seen from the Duplicate Killer menu. You can modify the saved rules, export and import them, or attach them to your e-mail.

If you use Outlook on a daily basis and don't want to waste your time on removing copies of Outlook items, Duplicate Killer is a must-have solution for you. Get rid of duplicated contacts, e-mails, events, appointments, meetings, tasks and notes to leave only relevant data in your Outlook folders.

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Duplicate Killer for Microsoft Outlook system requirements

Operating System

  • Windows 7 (32 and 64-bit)
  • Windows Vista (32 and 64-bit)
  • Windows XP (32-bit)
  • Windows Server 2003, 2008, 2012

Microsoft Outlook

  • Microsoft Outlook 2013
  • Microsoft Outlook 2010
  • Microsoft Outlook 2007
  • Microsoft Outlook 2003
  • Microsoft Outlook XP
  • Microsoft Outlook 2000

Duplicate Killer for Outlook version

Current add-in version: 3.40
published on: Jan 09, 2013

Plug-in vendor

4Team Corporation

4Team Corporation

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