How to Remove Duplicates in Outlook Manually

It feels bummed out when Outlook performance goes down due to duplicate emails and other items in mailbox. Duplicates lead to bulk, and it is obvious that an overloaded mailbox refuses to perform sleek. Moreover, it may slow down the speed of entire computer system. If you are a regular Outlook user, you must know the impact reflected by duplicate emails. For a professional user, it is a mandate to keep away from such matters because once the situation occurs; it may lead to disastrous cases including data loss.

You can also read the article Tips on How to Recover Deleted E-mails from Outlook Personal Storage Table PST File? which will provide you the idea about how to recover deleted emails from Microsoft Outlook.

There are various causes that create duplicates in Outlook; some of them are given below:

• Application of multiple rules
• Synchronization with devices like smartphone, tablet etc.
• Slow performance of computer
• Network problems
• Allowing Outlook to leave a copy of messages on server
• Importing items from Outlook data files (OST & PST)
• Subscribing one service multiple times

To exterminate data redundancy, it is required for you to remove duplicate items from mailbox. Below given procedure instructs you how to remove duplicates in Outlook 2002, 2003 and 2007 manually. Let’s continue to learn.

1. For Outlook 2002 and 2007, go to the ‘View’ menu, click ‘Current View’, and then change the folder view to a table type view. Do the same in Outlook 2003 by going to ‘View’ → ‘Arrange By’ → ‘Current View’ and changing the folder view to a table type view.
2. Right-click on a column heading.
3. Click ‘Field Chooser’.
4. In the displayed list, select ‘All fields’.
5. Press and hold ‘Modified’ field and drag it to table heading.
6. Check if the duplicates have unique date as compared to original items. If date is unique, click on ‘Modified’ to sort the items by date.
7. Select all the items to be deleted by clicking first item and scrolling to last. Make sure to press and hold the ‘Shift’ key from beginning to end.
8. Press ‘Delete’. Doing so will permanently delete the duplicate items.

So, now you are free from duplicates in your mailbox. You made it possible because you don’t have a long list of emails. When it comes to a bulky mailbox consisting of thousands of emails, contacts etc., it is not possible to dig into duplicates and remove them manually because it might take hours and days to complete.