E-mail allows individuals and groups to communicate digitally by exchanging messages. It has several uses such as sharing information, brainstorming solutions to problems, keeping records of group work, and staying in touch both professionally and socially. E-mail operates across computer networks and servers accept, forward, deliver, and store messages whether users are online simultaneously or not. While e-mail provides advantages like being cheap, easy to use, fast, and allowing global access to messages, it also has disadvantages such as potential for emotional responses, information overload, lack of personal touch, and misunderstandings.