An e-mail alias is actually an e-mail that shares a mailbox with a completely different email. For example, you can have [email protected] and [email protected] and messages sent to both of them will be received in one and the same mailbox. This option will make it less difficult and more convenient to handle a variety of e-mail addresses as you will have to log in one single mailbox if you are using webmail or configure only one e-mail address in an e-mail client on your PC. When you set up an alias, you will not only have the ability to get e-mails, but you will also be able to send email messages from the different addresses and they will share the Outbox, so you'll still have all communication in one location. Using aliases is a substitute for using different email addresses for different purposes or forwarding a single e-mail address to another so that you can manage the emails of both in one place.