Use iCloud email alias as apple ID
Is there any way to turn the iCloud email alias into a proper email address that can be used for Apple ID?
Question marked as
Top-ranking reply
If it is the original iCloud email address, you can use it for an Apple ID.
Based on what I have read, I suggest you leave your Apple ID email address as a 3rd party email address because you have more flexibility if you need to change the email address. For example, if the Apple ID *** compromised, you can change it to another address. I also have read of many people who were locked out of their accounts when they forgot their password. Since the recovery email address is the @iCloud email address, if you forget your password, you also can't access your email to get emails from Apple to recover your account. You can set a rescue email address, but for some people, this hasn't worked.