Because a true threat requires a bunch of things, including a time and an ability, and at least some insinuation of a method. It has to be a real method, so if

Because a true threat requires a bunch of things, including a time and an ability, and at least some insinuation of a method. It has to be a real method, so if the person is on the other side of the country and there's no reason to think the person is hiring a hitman (or has a Death Note, hah), it's not a true threat.