Magic Magnum said
All these people suggesting to call authorities, get violent or treat the threat as legit seriously makes me question how much experience they have with nasty/vicious people.
Death threats are a dime a dozen where I work. I rarely get them because I work nights for an extra sixty-five cents an hour. I have a crappy job, but some pathetic prick with a rolex driving a Mercedes wants to give me crap, I will do my damndest to ruin his life. So the few times I do get them, all it does is me piss me the fuck off. So I retaliate by having their pathetic ass thrown in jail. Then I hope and pray they get raped by their cell mate(s).