How to delete duplicate mail in outlook 2010

There are a few ways to delete duplicate emails in Outlook 2010:

Method 1: Using the "Find Duplicate Messages" feature

1. Open Outlook 2010 and go to the "Home" tab in the ribbon.
2. Click on the "Find" button in the "Find" group.
3. In the "Find" dialog box, select "Find Duplicate Messages" from the drop-down menu.
4. Outlook will search for duplicate messages in your mailbox and display them in a list.
5. Select the duplicate messages you want to delete and click the "Delete" button.

Method 2: Using the "Rules" feature

1. Open Outlook 2010 and go to the "Home" tab in the ribbon.
2. Click on the "Rules" button in the "Move" group.
3. Click on "Manage Rules & Alerts" in the "Rules" dialog box.
4. Click on "New Rule" and select "Start from a blank rule".
5. Choose "conditions" and select "with specific words in the message header" and enter a keyword (e.g. "duplicate").
6. Choose "actions" and select "move it to the Deleted Items folder".
7. Click "Finish" to save the rule.

Method 3: Using a third-party add-in

There are several third-party add-ins available that can help you delete duplicate emails in Outlook 2010, such as:

• Duplicate Email Remover: This add-in can be downloaded from the Microsoft Office Store.
• Duplicate Email Cleaner: This add-in can be downloaded from the Outlook Add-ins website.

Method 4: Using a VBA script

You can also use a VBA script to delete duplicate emails in Outlook 2010. Here's an example script you can use:

1. Open the Visual Basic Editor by pressing Alt + F11 or by navigating to "Developer" tab in the ribbon and clicking on "Visual Basic".

2. In the Visual Basic Editor, insert a new module by clicking "Insert" > "Module".

3. Paste the following script into the module:

   Sub DeleteDuplicateEmails()
    Dim olApp As New Outlook.Application
    Dim olNamespace As Outlook.Namespace
    Dim olFolder As MAPIFolder
    Dim olItems As Items
    Dim olItem As Object
    Dim dict As Object
   
    Set olApp = New Outlook.Application
    Set olNamespace = olApp.GetNamespace("MAPI")
    Set olFolder = olNamespace.GetDefaultFolder(olFolderInbox)
    Set olItems = olFolder.Items
   
    Set dict = CreateObject("Scripting.Dictionary")
   
    For Each olItem In olItems
        If dict.Exists(olItem.Subject) Then
            olItem.Delete
        Else
            dict.Add olItem.Subject, "1"
        End If
    Next olItem
   
    Set olApp = Nothing
    Set olNamespace = Nothing
    Set olFolder = Nothing
    Set olItems = Nothing
    Set dict = Nothing
   End Sub

4. Save the script by clicking "File" > "Save" (or press Ctrl + S).

5. To run the script, click "Run" > "Run Sub/User Form" (or press F5).

Note: Before running the script, make sure to backup your Outlook data and test the script in a non-production environment to ensure it works as expected.