An e-mail alias is an email address that shares a mailbox with a completely different email. For instance, you can have firstname.lastname@example.org and also email@example.com and emails sent to either one of them will be received in just one mailbox. This feature will make it less difficult and much more convenient to manage numerous addresses as you will have to log into one mailbox if you use webmail or set up a single address in an email app on your computer. When you set up an alias, you won't just have the ability to receive e-mails, but you'll also be able to send emails from the different addresses and they'll share the Outbox, so you will still have all communication in one location. Implementing aliases is an alternative to making use of various mailboxes for different purposes or forwarding a single address to a new one in order to handle the e-mails of both in one place.