Additional Apple ID email addresses and phone numbers
You can use your Apple ID email address to sign in to your Apple ID account. You might also be able to use additional email addresses and phone numbers that you added to your account.
To view or edit the email addresses and phone numbers you can use to sign in, do any of the following:
On your Mac: Choose Apple menu
> System Settings, click [your name] at the top of the sidebar, then click Sign-In & Security.If you don’t see Sign-In & Security, click Name, Phone Numbers, Email.
On your iPhone or iPad: Go to Settings > [your name] > Sign-In & Security.
If you don’t see Sign-In & Security, tap Name, Phone Numbers, Email.
Online: Go to appleid.apple.com, sign in, select Sign-In and Security (if it isn’t already selected), then select Email & Phone Numbers.
For more details about the different types of email addresses you can use with your Apple ID, see the Apple Support article About your Apple ID email addresses.