Create a auto reply email in Gmail

With previous post  I teach you How to insert signature to email in gmail. So with this tutorial I am going to teach you, how to create a auto reply email email. That means we can send email without login to gmail.
Simply this is the method,
when some one send email to us if we have created auto reply email then gmail system automatically send him or her to that email.
If we couldn't login to gmail for some period (if busy or any private matter) we can use this system. Also we can set period to send this email. when we wont to stop it easily we can disable that!!

here is the video I have created...