The history of mankind is a history of improvement in communication methods. Since the 20th century, mail has been the basic method of communication. The invention of email improves mail communication in two aspects: first, it is very cheap; second, it is instant. Email has become the preferred communication method for both companies and individuals. However, email is increasingly being challenged as chat, text messaging, Twitter, and social networks are gradually eroding the territory of email. This article will discuss the various issues that email is facing.