MESSENGER

[noun] [C]A messenger is someone who takes a message or documents from one person to another.In Roman mythology, Mercury was the messenger of the gods.The documents were delivered to the president by special messenger while he was on vacation.(disapproving) I'm not your messenger boy, do your own errands.(saying) 'Don't shoot the messenger (who brings bad news)' means do not be angry with someone because they tell you something bad.