An e-mail alias is an e-mail that shares a mailbox with a completely different email address. For instance, you could have and and messages sent to both of them will be received in one mailbox. This option will make it simpler and more convenient to handle a variety of email addresses because you will have to log into only one mailbox if you work with webmail or set up one e-mail address in an e-mail app on your PC. When you create an alias, not only will you be able to receive messages, but you'll also be able to send e-mails from the different addresses and they will share the Outbox, so you will still have all communication in a single place. Working with aliases is surely a replacement for using various email addresses for a variety of purposes or forwarding one address to a different one so that you can handle the emails of both in one place.