Metroproof is New York City’s leading proofreading and editorial services agency, working with many of the world’s largest la ... w firms, advertising agencies, pharmaceutical advertising agencies, and financial institutions since 1986. In “The City That Never Sleeps,” Metroproof is open 24 hours a day, 7 days a week, 365 days a year, allowing us to provide our one-of-a-kind customer service around the world and around the clock. Call or email us anytime from anywhere, and you will always reach one of our client-focused Metroproof staffers who will meet your needs quickly and professionally. read more