Ключевые слова: addresser, background, brown, business, closed, color, communication, concept, corporate, correspondence, deliver, delivering, delivery, design, envelope, envelopes, finance, flat, grey, group, information, kraft, lay, letter, mail, mailing, many, message, nobody, object, pack, package, paper, post, postal, receive, send, sender, service, shipment, simple, simplicity, stationery, stone, top, transfer, transferring, view,