Ключевые слова: addresser, background, blue, closed, closeup, color, colorful, communication, concept, correspondence, deliver, delivering, delivery, design, envelope, envelopes, green, group, information, invitation, letter, mail, mailing, many, message, nobody, object, packet, paper, pink, post, postal, receive, send, sender, service, shipment, simple, simplicity, stationery, transfer, transferring, vintage, yellow,