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.
Warning: Deleting duplicates in an Outlook.com account synced using Exchange Active Sync (EAS) can result in lost contacts. Export to a backup file first.
- If not using a list view, switch to a list view.
- Right click on the row of field names
- Choose Field Chooser
- Find the Modified field in one of the All <type> fields list.
- Drag the field to the row of field names and drop
- Sort by the Modified field.
Some tools, such as Outlook Contacts Scrubber, will merge the data on duplicate contacts to one contact. This is useful if you are combining contact lists from different computers and the data on the contacts are not identical.
Tools in the Spotlight
Outlook Duplicate Killer is add-in for Microsoft Outlook. Find, merge and remove Outlook duplicates. Compare, assign category, flag and move duplicates to selected folders. Find and remove duplicate contacts, emails, calendar events, tasks and notes automatically. Merge Outlook contacts and other items. Manage duplicates in any Microsoft Outlook folder, including Microsoft Exchange and Public folders. Preview duplicate search results prior to processing. Use with Microsoft Outlook 2016, 2013, 2010, 2007, 2003, 2002
Deduper does exactly as the name suggests, it searches and removes all duplicates - including appointments, contacts, notes, tasks or emails.
Either delete duplicate contacts or move them to a separate folder.
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
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).
Duplicate Remover will find, merge and remove duplicates in 3 steps using simple search wizard. Search duplicate items and merge Outlook duplicates automatically. We create a list of similar contacts for you to review, this way you will not delete sensitive contacts. Remove Outlook Inbox duplicates, duplicate Contacts and Calendar events and Junk contacts. Quickly clean up all your contacts. Automated inbox scanning and duplicates removal.
Accurate Outlook Duplicate Remover (AODR) can find and remove all duplicate Outlook items automatically. It quickly removes duplicates from Contacts, Calendar, Tasks, Notes and Email folders in one click. You can select any folder for duplicate Removing. It helps you to use your Outlook much more efficiently. Free for up to 200 contacts.
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.
Free (up to 100 records) or Pro version (unlimited records) to clean up duplicate contacts. Lets you make field-by-field choices of which data you want to retain and drag and drop the data. Merges categories and other keywords fields. Supports custom forms. Works with Outlook 2003 to 2010. Version 4.
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.
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.
Multifunction utility to send individual messages to a list generated either from a text file or from criteria on the Contacts folder, remove large file attachments, remove duplicate contacts and messages, and perform a few other little chores.
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 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.
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.
Free tool for removing duplicate items from Outlook folders. ODIR recognizes duplicates in Contacts; Calendar; Tasks; Notes and Email folders. Using ODIR is very easy: select a folder and click the button Remove Duplicate Items. ODIR scans the selected folder for duplicates and MOVES all duplicates found to a subfolder ODIR_duplicate_items. Version 1.2
Online service to eliminate wasted time by merging, cleaning, and eradicating contact conflicts. Works with Outlook, Gmail, Yahoo, and Mac address books.
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.
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