How to recall email in Gmail?

Gmail was introduced an years back.Gmail had the benefit of most used email service by millions but it still lacked the few features found in other mailing services like outlook.Mainly email recall ability.
Gmail too support this type of feature

If you are wandering that how to recall your email's, we are here to help you out.

Step 1: Once you are done with your email composing,subject and adding recipients, hit the "Send" button.

Step 2: As soon as email sent, you will get a notification on the top of your email window then the countdown begins from 30 seconds.you will be able to recall your email only with in this time limit.
Click on "Undo send" to recall your email.