hate mail

:  intense hostility and aversion usually deriving from fear, anger, or sense of injury

:  extreme dislike or disgust :  antipathy, loathing

:  an object of hatred

:  to feel extreme enmity toward :  to regard with active hostility

:  to have a strong aversion to :  find very distasteful

:  to express or feel extreme enmity or active hostility

:  payment, rent

:  bag, wallet

:  material (such as letters and packages) sent or carried in a postal system

:  similar material distributed within an organization

:  to send by mail :  post

:  armor made of metal links or sometimes plates

:  a hard enclosing covering of an animal (such as a tortoise)