[Ramrod]

The days of pretending you just didn't get that e-mail you ignored could be over. Today, a company called DidTheyReadIt.com offers customers the chance to track every e-mail they send.



By signing up, you'll be able to see when an e-mail was opened, how long it was looked at, if it was read more than once, and if it was forwarded to anyone else.

link


and....
http://didtheyreadit.com/