What is an Email Address?

About

An email address is a Internet identifier for:

Syntax

Base

The inbox email identifier contains:

local-part@domain

Tagged

Email server may support the addition of tag after the local-part where the local part and the tag are separated by a + or -

This tag then serves generally for routing or analytics purpose.

Example:

[email protected]

The email provider or SMTP server must support email tags. To check, just send an email to [email protected] is delivered to the email [email protected].

Sender vs Author

An address can be specified as:

Rewriting

As for URL, you can also rewrite an email address, meaning that the email will be delivered to the email server but at another email address.

Examples of address rewriting 1) :

  • Transform an incomplete address into a complete address.
username -> [email protected]
username@hostname -> [email protected]
  • Replace an address by an equivalent address.
sending: [email protected] -> [email protected]
receiving: [email protected] -> [email protected]
  • forwarding: Replace an internal address by an external address. Example: When sending mail from a home computer to the Internet.
[email protected] -> [email protected]
  • Mailing List: Replace an address by multiple addresses. For example, replace the address of an alias by the addresses listed under that alias.

Validation

See Email - Address Validation

List

See What is a Mailing List?

Documentation / Reference





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