How Can I Stop Sending / Receiving Duplicate Email Messages From Outlook

Resolving the sending and receiving of duplicate e-mails problem in Outlook

A common problem with the Outlook Express is that people receive two copies of the same e-mail in their Outlook mailbox. Also, sometimes people end up sending duplicate e-mails from their Outlook mailbox. This can become a real pain after a point of time. This article tells you how you can deal with this issue.

Although there are no straight-cut solutions to this issue, here are a few possible workarounds that will take care of the problem.

How to stop duplicate e-mails from entering your inbox

1. A primary cause of duplicate messages is that you have enabled the Leave a copy of messages on the server option.
   1. Go to Tools -> E-mail Accounts in the Outlook Express main window.
   2. Select the View or change existing e-mail accounts, and click on Next.
   3. Select your account, after which click on Change.
   4. Select the More Settings option.
   5. Go to the Advanced tab, and deselect the option for Leave a copy of messages on the server.
   6. Click OK.
2. If the above steps do not fix the problem, then try the following:
   1. Check the Task Manager to see if there are two outlook processes running, as this could also cause duplication of messages.
   2. Try deleting and then remapping all of your e-mail accounts.
   3. Make sure that you have the latest updates/version for Windows.

How to stop sending duplicate e-mails from your Outlook mailbox

The only reason, which might cause Outlook Express to send duplicate e-mails, is that your antivirus suite is configured to check every e-mail that is sent from your mailbox. This will cause Outlook’s sending process to be interrupted in between. Thus, it will resend the mail after it has passed virus screening – resulting in a duplicate copy of the same mail being sent.