Duplicate e-mails Hi, when I send e-mails my contacts receive them in two and sometimes three copies, how can I solve this problem.

Hi,

Here is the solution for you

http://support.microsoft.com/kb/885870

You can also check this

http://support.microsoft.com/?kbid=284404

Or

1. How to stop receiving duplicate email messages

There are a few things you can check to stop duplicate email messages.

Start by checking Rules to be sure that copies are not being made to the Inbox, and make sure that all your rules end in "Stop Processing" actions.

Then check the task manager to be sure that there is only one instace of Outlook running.

Two instances of outlook.exe running can produce two messages arriving at the same time.

You will need to then determine why two instances of Outlook were running in the first place.

Another thing you can do is to delete/remove ALL your e-mail accounts and recreate them. This worked for some people.  

Finally, another person had this happen when he had two e-mail accounts set up - using two e-mail addresses, but the same POP3 incoming and same SMTP outgoing.

What happened is that the second account was getting the e-mails from the POP3 server before they were actually deleted after the first account was finished.

If this is the problem you can disable the receive on the second account.

And

2. How to remove Outlook duplicates, including email, contacts, appointments, and tasks

If you have just a few duplicates, it may be easiest to manually remove them. For emails, this is no problem but for any other Outlook item it is easiest to view the items in a table view, then select the duplicates, then delete them.

To accomplish this, go to View...By Category (or "By" anything really). This gets the view into a mode you can work with.

Click either names or subjects (or any shown field) in the column header (in the gray area) to gather similar items together.

You can then delete all the duplicates you find.

You can also check this :

http://www.sperrysoftware.com/Outlook/Outlook-Duplicates.asp

Hope this helps.

Good Luck.

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