How to know IP address of mail

Hello guys,
Above video i am showing about how to know the IP address of mail. Just follow few steps for know the ipaddress of any mail.

1) Open gmail in your browser
2) Open the mail(which one want to know the IP address )
3)Click on more options you will see a show original option click on that.

4) After you will see a IP address like this pictures .

By using these steps we can easily know the IP address of any mail.