N.Y. Multiple Dwelling Law § 57

§ 57. Bells; mail receptacles. 1. Whenever bells are installed at the\nentrance to any multiple dwelling or at any door of an individual\napartment in a multiple dwelling, they shall be kept in good working\norder.\n 2. Whenever the owner of a multiple dwelling has not arranged for mail\nto be delivered to occupants thereof by himself, his agent or employees,\narrangements shall be made for the delivery of such mail in conformity\nwith regulations of the post office department.\n