Ключевые слова: address, background, box, business, color, colorful, communication, correspondence, deliver, delivery, design, email, envelope, envelopes, equipment, flag, full, ideas, internet, junk, letter, letterbox, mail, mailbox, mailing, message, metal, nobody, object, open, paper, pole, post, postage, postal, postbox, receive, red, send, sign, stuffed, symbol, wooden,