Ключевые слова: background, box, bright, business, city, color, communication, container, contrast, delivery, design, home, house, icon, image, isolated, letter, letterbox, magazines, mail, mailbox, message, metal, news, newspapers, office, old, post, post office box, postage, postal, postbox, purple, purple mailbox, retro, rusty, send, service, shipping, sign, style, symbol, texture, traditional, travel, vintage, wall, white, wooden, worn,