Ключевые слова: background, box, boxes, business, closeup, collection, color, communication, container, correspondence, delivery, female, filled, hand, house, human, incoming, key, letter, letterbox, letters, lock, locked, mail address, mailbox, metal, multiple, new, object, old, open, paper, post, postage, postal, postbox, private, receive, receiving, retro, row, secure, send, service, shallow, system, vintage, wall, white, woman,