Electronic mail address,
Definition of Electronic mail address:
Multi-part address where the first part (the user name) identifies a unique user. The @ separates the user name from the host name which uniquely identifies the mail server. The three-letter suffix following a period (dot) identifies the kind of organization operating the mail server. Addresses outside the US use another (two-letter) suffix that identifies the country where the mail server is located. By convention, all email addresses are typed in lower-case (common letters) without any spaces separating the different parts.
Meaning of Electronic mail address & Electronic mail address Definition