Make sure your friend isn't FBI, or FBI, Police, or other informant. Make sure your friend isn't going to rat you out. Make sure your friend isn't going to ju

Make sure your friend isn't FBI, or FBI, Police, or other informant. Make sure your friend isn't going to rat you out. Make sure your friend isn't going to just take the money and tell you he mailed it. Make sure your friend doesn't get caught. Make sure your friend can resist NYPD torture (cough, I mean Enhanced Interrogation) because how do they know it's not ricin in the envelope, so they can't take any chances. Make sure your friend understands that if you're doing something shady, something that could be considered Postal Fraud, that he could then be prosecuted as an accomplice. Make sure he understands that he could spend years in jail for blindly remailing something of yours. For someone willing to take those risks based on your friendship, that would be some really close friend! (or an FBI informant). I think it's safer to just not mail the letter if you really want to be anonymous. Think of your friend's safety!