Ключевые слова: address, advertising, background, blue, box, business, close, communication, correspondence, delivery, filled, flap, flyers, full, home, house, invasive, iron, junk, key, letter, letterbox, lock, mail, mailbox, many, message, metal, new, newsboy, newspaper, object, office, package, paper, post, postage, postal, postbox, receiving, residence, residential, residents, row, send, service, shallow, shipping, slot, typical,