Long Island, Ny, Usa. I Advertise My Business By Placing Fliers In Mail Boxes. Post Office Tells Me To Stop Because Its Illegal To Place Them In Mail Boxes Without A Postmark. I’m Confused Because Post Office Doesn’t Buy Or Own The Mail Box, Mail Box Is On Private Property, I'm Delivering Myself I'm Not Asking Them To Deliver It For Free. Post Master Tells Me If I Continue He Will Charge Me For Postage For Each Flier Found In Mail Box By Mail Man. If I Refuse To Pay Can Legal Action Be Taken Against Me? Please Help! Thank You.