The invention of email has undoubtedly changed the way we interact as a society. It makes for far more efficient and consistent communication. “Today, email remains one of the most effective and widely used marketing channels, and it continues to evolve. According to Direct Line Blog, “Like the telephone, email has undergone radical transformations since its inception.”

According to a recent study by email services company SendGrid, people open emails on iPhones, iPads, and Mac computers more than 36 million times per day. This study collected data on approximately 8 billion emails sent by more than 125,000 companies over two 10-day periods in 2013 and 2014.…