The full form of E-MAIL is Electronic Mail

Electronic mail (e-mail) is a computer-based application for the exchange of messages between users. A worldwide e-mail network allows people to exchange e-mail messages very quickly. E-mail is the electronic equivalent of a letter, but with advantages in timeliness and flexibility. While a letter will take from one day to a couple of weeks to be delivered, an e-mail is delivered to the intended recipient’s mailbox almost instantaneously, usually in the multiple-second to subminute range. This is the case whether the e-mail is exchanged between people on the same floor of a business, or between friends at opposite points on the globe. This article provides a comprehensive, intermediate-level overview of e-mail, including its main functions, historical and current architectures, key standards, supporting infrastructure, and contemporary and future issues.