Making an email alias means making an e-mail address which shares the same mailbox with a different address for both the incoming as well as the outgoing e-mails. For instance, you are able to make an address email@example.com and it'll be linked to its own mailbox. Next, you can create an alias firstname.lastname@example.org, that can use the mailbox of sales@ and does not use a mailbox of its own. If you check your emails, you'll see e-mails sent to either one of the two addresses in one location, which may be more convenient in some circumstances since you will not have to sign in and out of numerous email addresses working with webmail or create numerous addresses inside an email app. This option is frequently used as an alternative choice to forwarding emails from one e-mail address to another one if numerous email addresses are included for contact on a web site.