While you can remove duplicates by hand, the tools on this page make it easier when there are a lot of duplicates. Although some of these tools work only with the mail folders, many will work on any Outlook folder that contains duplicates.
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Duplicates Remover for OutlookManually Remove Duplicates
To remove duplicates, you need to use a single line table view, either by turning off the reading pane (View tab) or by dragging it to the right to make it narrower (on smaller screens, you may also need to collapse the navigation pane and To-do pane). In Outlook 2016, you may want to turn off Message Preview.
If you are using the the default group view in email folders, click on the field names above the message list and deselect Show in Groups.
For email folders, all standard views use a table view and you just need to turn off grouping and move (or turn off) the reading pane to enable the single line view. In the calendar, choose Events or By Category view, or in Outlook 2010 and up, the List view. Use Phone view or a list view in Contacts.
With a single line view:
- Right-click any column heading, then choose Field Chooser.
- In the Field Chooser, switch from the Frequently-used fields list to Date/Time fields, and then drag the Modified date field to the view to add it to the fields displayed.
- Click on the Modified column header to sort by that field.
- You should now see your Outlook items in reverse chronological order.
- Click on the first item you want to delete.
- Use the scroll bar to find the last item with the same modified date.
- Hold down the Shift key as you click on the last one. This selects all the items between the two selections.
- Press Delete to remove them all from the folder.
- Reset the view when finished.
This method works well with imported items or when you re-download messages left on the email server because you'll have one set of items with the same modified date.
Deleted Duplicated Email Video Tutorial
The steps for Outlook 2003 and up are basically the same, except for the menu commands to turn the reading pane off and on. The first half of the video was recorded in Outlook 2010, the second half in Outlook 2007.
To turn the reading pane off and on in Outlook 2010, go to the View ribbon and expand the Reading pane menu.
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 |
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Deduper does exactly as the name suggests, it searches and removes all duplicates - including appointments, contacts, notes, tasks or emails. |
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Either delete duplicate Outlook items or move them to a separate folder. Includes all 8 of the duplicate eliminator add-ins from Sperry Software for a single low price. You get: Duplicate Email Eliminator Add-In, Duplicate Email Eliminator Across Folders Add-In, Duplicate Contacts Eliminator Add-In, Duplicate Appointments Eliminator Add-In, Duplicate Tasks Eliminator Add-In, Duplicate Notes Eliminator Add-In, Duplicate Journals Eliminator Add-In, Duplicate Posts Eliminator Add-In. |
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Cleans up a single folder by either deleting duplicates or moving them to a separate folder. Duplicate Email Eliminator Across Folders is a version to find duplicates across multiple folders. |
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Finds and removes duplicates, even if the messages appear in different folders. Delete, move, or copy duplicates to any folder. Mark duplicate messages with a flag. Search for duplicates in the same folder, or in different ones. Process duplicates in Public folders on the Exchange Server. |
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ReliefJet Essentials for Outlook 4.8.1 includes three new utilities for converting MSG, EML and MBOX files to PST data files. Many utilities provide macro picker making it easier to use the power of macros. New utility "Export Outlook MSG to PST" converts Outlook messages, contacts, appointments, meetings, tasks and other Outlook items from MSG to PST data files. New utility "Convert EML/EMLX to PST for Outlook" works with email messages in EML and Apple EMLX formats, retains folder structures and provides many options. New utility "Convert Emails from MBOX to PST Format" converts email database files from MBOX to PST for Outlook. Supports headers, Gmail labels and more. |
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23 Comments on "Duplicate Remover Tools"
My MS Outlook 2017 is showing a RED X on the ICON in the Task Bar. Also I notice that the CLEAN UP, IGNOR AND JUNK show red x's except the Junk
shows a cross out symbol. I need help with this because I see also the
OUTBOX showing mail to be sent, but does not seem to be functions.
Probably one simple procedure will clear it all up, but what to do?
I use Duplicate Files Deleter to remove all the unwanted, duplicated files from my pc.
where can I get duplicate words remover?
I'm not aware of a duplicate word remover. Sorry. The spell and grammar checker can mark duplicated words though - but you need to delete the duplicate.
Diane - Many thanks for that. It doesn't sound too difficult but I wish I knew where to start...?
I have a basic script here - I'll try and make time to tweak it to check the sender and subject, and maybe the body.
I have an Outlook 2003 folder which often accumulates duplicate emails (usually pairs - don't ask, it's a long story!). Rather than delete them automatically, I am looking for a macro which will highlight one of each pair in the folder. Does anyone know if such a thing exists please?
I don't have any macros that do this, but it should be easy enough to do, I'd compare the subject and sender of two messages and set a category on one if a match is found, then move to the next message.
A few years ago I asked the developer from "Delete Duplicates for Outlook" to add that to the features of his program. He did, it's called "Special Comparison". There's a lot to tweak to make it work and I'm having some problems in the latest versions but in principle it should work.
Thanks Diane. I'm using Outlook 2007. I found a tool called DupeDuster from Ivitar Software about 12 years ago. I have been using it ever since but it does not handle attachments correctly and often gets confused if an embedded note came from a source other than Outlook. If you know of something else I would be grateful to hear about it.
I'm looking for a different type of Duplicate Remover; one that removes notes that are contained in other notes.That is, if you send me an email, and I respond to you, then you respond to me, I have 3 different emails, but all I need is the last one because it contains the information from the previous 2. How can I accomplish this? This will require searching both Inbox and Sent Items.
What version of Outlook? 2010 and 2013 have a clean up conversation feature which does this. There are one or two addins that can do this too - should be somewhere in the long list of tools here, but i forget the names offhand. :( If you aren't using Outlook 2010/2013, I'll see if i can find them.