Apple has announced that Sign in with Apple and iCloud+ Hide My Email aliases will now use the @private.icloud.com domain, making it easier for services to block these aliases without affecting regular iCloud mailboxes. This change could reduce the effectiveness of Hide My Email for privacy, as many services may start rejecting these new aliases similarly to temporary email addresses.
https://arseniyshestakov.com/2026/06/16/apple-is-about-to-make-hide-my-email-useless/