An email alias is an email that uses the same mailbox along with the original e-mail. For instance, you can have [email protected] as the actual email address and add an alias [email protected] Both the email addresses will be able to share the exact same mailbox, so e-mails sent to both of them shall be received in a single place. You can use aliases for a number of needs, for example communicating with different teams of people or enrolling on websites. If you ever begin to get a number of spam, for instance, you can easily erase the alias whilst your original mailbox will not be affected by any means and you'll maintain the e-mails you need. Aliases are often considered to be an alternative to forwarding messages from one mailbox to another if you work with several email address for contact on your web site.