Email Tracking? Ny Idea pl0x?

Back then I heard something called email tracking. This feature also exists in PMing...even here in Sythe.

It works like this. You send an email and through this feature you can track it and see if it is read or not. You can even delete the email before it being read from your inbox (while your email is on receiver's inbox)

Anyone know which email services offer this? Thank you in advance

 

I believe you have to have an email client, and I recommend incredimail.