Ключевые слова: address, aging, background, blank, blue, business, card, clipart, closeup, communication, connection, container, correspondence, delivery, design, document, email, empty, envelope, generic, information, invitation, isolated, letter, mail, mailing, message, modern, nobody, object, office, open, package, paper, past, post, postage, postal, process, receive, retro, send, single, space, stationery, symbol, white, write,