This document provides an introduction to email. It begins by explaining that email allows for digital messages to be exchanged between an author and one or more recipients over the internet or computer networks. It then lists some common uses of email, including communication, information sharing, brainstorming, record keeping, group work, and staying in touch professionally and socially. The document also outlines some advantages of email such as low cost, ease of use, speed, and global accessibility. Finally, it notes some potential disadvantages like emotional responses, information overload, lack of personal touch, misunderstandings, and the challenge of an ever-filling inbox.