How do I know if someone has read my email?

Yahoo! Mail doesn't have that feature, but you can install a program called DidTheyReadIt. When you use DidTheyReadIt, e-mails that you send are automatically and invisibly tracked without alerting the recipient. The instant the recipient opens your message, DidTheyReadIt automatically notifies you.





When they read your message, you will immediately receive the following information:


1. When, exactly, your email was opened.


2. How long your email remained opened.


3. Where, geographically, your email was viewed.





You can get a free trial here.


http://www.didtheyreadit.com/





How it works.


http://www.didtheyreadit.com/index.php/h...






How do I know if someone has read my email?
If it has already been read when you go in to your e mail and you know you didn't read it.