Ключевые слова: abstract, background, business, closeup, communication, computer, concept, conference, consult, digital, double, e, electronic, email, envelop, exposure, graph, icon, increase, infographic, internet, it, job, laptop, letter, mail, mailbox, math, message, modern, monitor, notebook, online, open, pc, purpose, research, screen, send, social, software, spam, startup, strategy, symbol, technology, ui, virtual, web,