Originally Posted by amanda_lakai

To track an email in Outlook you can flag the message. By flagging an Email message you can also track the replies to the message you follow up.
To flag a sent message to remind recipients to follow-up follow the given steps:
1. Go to the Message tabOptions group then select Follow Up
2. Click Flag for Recipients. You can set the type of flag from the option the Flag to list Under Flag for Recipients
3. Click Ok
For more about tracking mail check link: http://office.microsoft.com/en-in/ou...001229901.aspx