17. The method of claim 11 , further comprising: recognizing an activation of a button comprised in the notification; and identifying whether a handwriting input action exists in registration information about the button.
17. The method of claim 11 , further comprising: recognizing an activation of a button comprised in the notification; and identifying whether a handwriting input action exists in registration information about the button. 18. The method of claim 17 , further comprising: in response to determining that the handwriting input action exists, activating a reply message transmitting action to the second terminal in a background state.