Can the police trace threatening and haring emails via remote access?

i can do it in about ten minutes all together. and i am not even a computer geek. but remember, that still don't mean they are guilty because i can also hack into your email account and send messages from your computer so that if someone traces it they will come back to your isp address. you can trace my isp address right now and it will take you to an actual address that is about twenty miles from where i really am. a lot of things can be done with computers to hide who you are or wheren you are.