Traditional Mail vs Email
Traditional mail is addressed with the recipient's name, street address, city, state or province, and zip code. For example, it will usually look something like: Robert Greene, 202 Cedar Lane San Jose, CA 95123
Traditional mail in a sealed envelope or package is delivered to a home or post office box by a mail carrier. Traditional mail delivery is handled at distribution centers where it is sorted and delivered to regional areas for delivery by a Postal worker. You walk out to the mailbox to retrieve your letter.
Email addresses are always written in a standard format, but they look quite different from traditional mail. An email address includes a username, the @ (at) symbol, and the email provider's domain. Think of a domain as the place where the email is delivered. This can be the name of a service provider such as Gmail or the unique name of the user’s business such as mybusinessname.com
Email is delivered electronically across the Internet usually instantaneously or within a few minutes. The naming after the @ symbol represents the user’s Domain or location. Electronic mail is then sorted and delivered using Simple Mail Transfer Protocol (SMTP) - mail distribution center, and then delivered to the users address; which is identified by the mail exchanger record (MX record). In this case, you log into your email account to retrieve your messages.