If you have an email account from Apple, ending in either mac.Com, me.com, or iCloud.com, you can set up 3 alias email addresses. The email addresses can be used for whatever purpose you decide. If your primary email address has your name, you may want an alias to use on web sites, or for shopping accounts. The only requirement is that the address cannot be in use by someone else. The new email addresses are tied to your primary address so there is no need to add them to your set up, they will just show up in your inbox.
We did this on the tech support email. The primary email address is firstname.lastname@example.org but we set up an alias of SunLakesAppleSupport@icloud.com because it was a little more descriptive and easier to remember.
The link below shows how to set them up.