"Yes, it's a crime to send something threatening regardless of the intent"
"If it would reasonably be viewed as a threat by the recepient it' a crime regardless of the intent of the sender"
"It would depend upon the intent of the sender"
"It depends upon who the recepient is. If its a polical figure, its a crime. If it's your freind and its a joke, it's not a crime"
"It's not a crime if it's an expression of free speech as long as it doesnt threaten or terrorize "