undo send?

[InGearX]

just like gmail web has an "undo send" feature .. (if you enable it in settings > labs - http://i.imgur.com/nxIcC6J.png )

Undo Send

Oops, hit "Send" too soon? Stop messages from being sent for a few seconds after hitting the send button

sometimes I hit send and sends later I realize I should have some info or some attachment or etc ..

is there anything alike for gmail client on Android?

or any trick / hack / workaround we can use?

thank you ..