Email signature marketing (ESM) is the practice of utilizing email signatures for strategic messaging and lead generation. An average employee sends about 30 emails per workday, resulting in 3,000 emails for an organization of 100 employees. By turning email signatures into a brand and communication tool, businesses can encourage readers to respond by contacting them directly, scheduling a meeting, or subscribing to their promotional list. Email signature trends and statistics show that ESM can increase click-through rates, website traffic, and lead generation.