Ключевые слова: address, background, business, card, closed, communication, contact, correspondence, deliver, delivery, design, different, document, envelopes, group, information, invitation, isolated, kraft, letters, logistic, mail, mailer, mailing, many, message, newsletter, object, office, paper, post, postage, postal, postcard, receive, send, sender, sending, service, shipment, stack, stationery, transfer, transferring, white,