An email alias is an e-mail address that uses exactly the same mailbox along with the original email. For instance, you can have firstname.lastname@example.org as your actual e-mail address and add an alias email@example.com. Each of the email addresses will be able to share the same mailbox, so emails sent to both of them shall be received in a single place. Feel free to use aliases for several needs, for example getting in touch with numerous teams of people or signing up on sites. Any time you begin to get a number of spam, for example, you can easily erase the alias while your original mailbox will not be affected in any way and you'll keep the communication you need. Aliases in many cases are considered to be an alternative to forwarding emails from one email address to another if you work with several addresses for contact on your website.