Ключевые слова: app, application, background, banner, blank screen, brand, business, communication, concept, copy space, correspondence, device, display, document, email, envelope, event, horizontal, image, inbox, isolated, isometric view, letter, message, mobile phone, mockup, modern, newsletter, no body, no person, notice, notification, online, pink, receiver, report, send, service, smart phone, social media, technology, template,