There are several ways to find that the person has opened and read the message!
But i will teach you a very easy way that use something by adding confirm.to to the email that you are sending it to...
Example: I want to send an e-mail to a friend of mine (example)
Code:
example@hotmail.com
So now, how to know ?
Just add the word to the mailing address: "confirm.to" (without quotes)
So it will be:
Code:
example@hotmail.com.confirm.to
An
And You will receive a message telling you that your friend/victim has opened the message and at what time!!!!!!