How to use iCloud aliases to send and receive email

Sometimes it’s useful to have an email address that’s not your primary one. You might want to sign up with a service or use it to subscribe to an email list, and not trust that it won’t be reused and deluged with unwanted mail you can’t unsubscribe from.Apple lets you set up to three additional email-only identities with iCloud.com, called aliases. That lets you preserve your primary iCloud.com address for whatever purpose you like while having these three alternative id