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Delete Duplicate Outlook Contacts

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› Tools & Utilities › Duplicate Remover Tools › Delete Duplicate Outlook Contacts

Last reviewed on February 12, 2021     4 Comments

Applies to: Outlook 2007, Outlook 2010

This is a collection of tools used to remove duplicates from your Microsoft Outlook Contacts folder. Some of these tools will also remove duplicates from other Outlook folders.

When the duplicates are the result of importing and all are duplicated, you can sort by the modified date field (you'll need to add the Modified field to the view), then delete all of the items with the same modified date and time. When the duplicates have assorted modified times, you'll need to delete the duplicates yourself or use one of the many duplicate remover tools to automate the process.

  1. If not using a list view, switch to a list view.
  2. Right click on the row of field names
  3. Choose Field Chooser
  4. Find the Modified field in one of the All <type> fields list.
  5. Drag the field to the row of field names and drop
  6. Sort by the Modified field.

Sort by the modified date field

 

Tools in the Spotlight

4Team Duplicate Killer

Outlook Duplicate Killer is an add-in for Microsoft Outlook. Find, merge and remove Outlook duplicates. Compare, assign the category, flag and move duplicates to selected folders. Find and remove duplicate contacts, emails, calendar events, tasks and notes automatically. Manage duplicates in any Microsoft Outlook folder, including Microsoft Exchange and Public folders. Preview duplicate search results prior to processing. New Duplicate Killer has improved user interface. Now account name and folder path are display.

Duplicates Remover for Outlook

Delete duplicate contacts, notes, tasks, journal and calendar items in Microsoft Outlook folders and Exchange Server folders. Duplicates can be marked, copied or moved to any folder. It supports searching across the folders. Supports all versions of Outlook, including Outlook 2007/2010. Version 2.6

ReliefJet Essentials for Outlook

ReliefJet Essentials is a set of 162 utilities for Outlook, Office 365 and Exchange Server. It can backup, import, export and convert data into different formats. Perform personalized mass mailings. Save, remove and optimize attachments. Find and remove duplicate messages, contacts, appointments, meetings, and other items. Retrieve statistics on email usage and get reports on Outlook data and settings. You can run the utilities directly from Outlook, automatically in rules, via standalone app, or from the command line.

Tools

1-Click Duplicate Delete

1-click solution to remove duplicate mails, contacts or calendar items. Merges contacts automatically, has an undo function and a configurable advanced mode. Version 3.03 Now supports Outlook 2010 (both 32 and 64 bit).

4Team Outlook Duplicate Remover

Duplicate Remover will find, merge and remove duplicates in 3 steps using simple search wizard. Search duplicate items and merge Outlook duplicates automatically. Review & merge duplicate Outlook contacts. Remove Outlook Inbox duplicates, duplicate Contacts and Calendar events, Junk contacts. Quickly clean up all your contacts. Application can now be started as a standalone, without starting Microsoft Outlook. Scan Outlook inbox automatically and clean duplicates in one click. Now delete duplicates for multiple folders.

Anti-Dupe for Microsoft Outlook

Remove unwanted Outlook duplicate records with Anti-Dupe for Microsoft Outlook add-in utility. Anti-Dupe for Outlook scans and deletes duplicate Outlook duplicate appointments, contacts, emails and tasks based on pre-determined criterion set by Anti-Dupe. Trial version available.

Deduper - Outlook Duplicate Remover

Deduper does exactly as the name suggests, it searches and removes all duplicates - including appointments, contacts, notes, tasks or emails.

Delete Duplicates for Outlook

Delete Duplicates for Outlook deletes duplicate e-mails. Detect and remove duplicate messages, contacts, calendar items, tasks, journal entries and notes. Compare messages by content (Standard), by part of the content (Special) or by unique message-id's (Light). Compare attachments and/or embedded files, by name and/or by content. Compare duplicates across several mailboxes or in within the boundaries of individual mailboxes. Use Regular Expressions. Works with all Outlook versions, inc. Outlook 2010/2013 32 or 64-bit.

Duplicate Contacts Eliminator

Either delete duplicate contacts or move them to a separate folder.

Kernel for Outlook Duplicates Remover

Kernel for Outlook Duplicates Remover tool is specifically programmed to remove duplicate items of MS Outlook permanently. The tool easily locates all duplicate Outlook items and provides option to either manage them or remove them permanently. The tool supports removal of duplicate items for all MS Outlook versions. Its free trial version can remove 10 items from each folder and expires after 30 days of download.

Mergix Duplicate Contact Remover

The free duplicate contacts removal service for Outlook Exchange, Office 365 Mail, iCloud and other contacts sources. A time-saving solution to clean up large contact lists and Address Books automatically. The simple cloud-based app will scan and compare contact data across the selected email services (Microsoft Outlook with Exchange accounts, Office 365 Mail, iCloud, Gmail, Outlook.com, Hotmail) and find all duplicated contacts. The web app is compatible with all Windows PCs and Macs, iOS, Android smartphones and tablets.

NoMoreDupes for Outlook

NoMoreDupes detects and removes all duplicated Outlook items both in an Outlook pst file, a public folder or in an Exchange account. It shows the found duplicates in a preview for the user to decide which duplicates to remove. You can move the duplicated Outlook items to your "Deleted Items" or to any other folder you specify. NoMoreDupes uses a special algorithm to detect the Outlook duplicates. This Outlook-Add-In works with all versions of Outlook, including Outlook 2010/2013 64bit.

OL LookForDuplicates

Find & remove duplicates with this open-source VBA-Script. Searches for duplicate entries of any type (calendar, contact, e-mail, notes, task, etc.) across folders in Outlook. Suspected duplicates are listed and can be moved to the Deleted Items folder.

Outlook Duplicates Remover

Removes duplicate items from Calendar, Tasks, Contacts, Notes, and mail folders. Free.  

Stellar Duplicate Remover

Clean up your Outlook mailbox from unwanted and duplicate emails with Outlook duplicate remover tool. This software works as an Add-Ins in Outlook and removes duplicates as per different time span and scan criteria. Customized operations like Mark as Expired or Flag, Delete Permanently, Copy to folder and more are also a notable feature of this software.

More Information

Several other kinds of tools related to contacts are listed on their own pages:

  • Contact Management Tools
  • Telephony Tools -- including utilities to copy contacts to mobile phones and to use contacts with Caller ID
  • Print Labels and Envelopes for Contacts
  • Start a Letter from an Outlook Contact
  • Microsoft Outlook Contacts Issues
  • Distribution Lists
  • Combine duplicate contact items
  • Printing Microsoft Outlook and Exchange Address Books
  • Updating User Information in the Exchange Server GAL
  • Microsoft Outlook Contact Forms
Delete Duplicate Outlook Contacts was last modified: February 12th, 2021 by Diane Poremsky

Related Posts:

  • Duplicate Appointment Remover Tools
  • Duplicate Remover Tools
  • Combine Duplicate Contact Items
  • Outlook is downloading duplicate emails from a POP3 account

About Diane Poremsky

A Microsoft Outlook Most Valuable Professional (MVP) since 1999, Diane is the author of several books, including Outlook 2013 Absolute Beginners Book. She also created video training CDs and online training classes for Microsoft Outlook. You can find her helping people online in Outlook Forums as well as in the Microsoft Answers and TechNet forums.

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Duper (@guest_209512)
November 29, 2017 5:13 am
#209512

Any solution to delete duplicates within SINGLE contact, e.g. duplicated Email1 and Email2 fields?

I see another user was looking for solution here but no solution found.

0
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Diane Poremsky(@diane-poremsky)
Author
Reply to  Duper
November 30, 2017 3:48 pm
#209522

I have some macros on the site that could do it - my bulk change contacts macro. Edit it to compare the addresses and delete one if identical
If .email1address = .email2address Then
.email2address = ""
end if

this version of the bulk contact macro just needs a little editing to do it.
https://www.slipstick.com/outlook/contacts/bulk-move-phone-numbers-to-a-different-phone-field/

1
-1
Reply
Belinda (@guest_173273)
January 11, 2013 7:03 pm
#173273

Oh dear, what have I done? Downloaded Cosi for ipad, and saved Outlook 2007 calendar as it said as a pst file, then downloaded the Cosi toolbar to sync. All worked well. But then noticed all outlook appointments had blue square on them. So deleted Cosi off ipad, emailed them re my deletion, then deleted via Control panel Programs. Then reinstalled according to Cosi's directions and now I have a new calendar and an old calendar mixed up with old recurring appointments coming up all the time. I don't know how to remove them. I've tried deleting the old recurring appointments to no avail. Any ideas muchly appreciated?

1
-1
Reply
Diane Poremsky (@guest_173281)
Reply to  Belinda
January 12, 2013 6:12 am
#173281

In Outlook... is every thing in one calendar folder or in two? Normally, the best way to delete stuff from the calendar is using a list view but I'm not clear if the problem is in your default calendar in Outlook or with the sync process as I'm not real familar with the cozi app.

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