An e-mail alias is an e-mail address which uses the exact same mailbox along with the initial e-mail address. For instance, you can have [email protected] as your authentic email address and add an alias [email protected] Each of the addresses can share the same mailbox, so emails sent to both of them shall be received in a single place. Feel free to use aliases for various needs, for example emailing various types of people or registering on web sites. If you start getting a great deal of spam, for example, you can easily delete the alias whilst your actual mailbox will not be affected at all and you'll maintain the communication that you need. Aliases in many cases are viewed as a substitute for forwarding messages from one mailbox to a different one if you work with several email address for contact on your site.