> If a customer contacts us asking for support, and we need to look up something in their account, typically we can just ask them for the email address on their account. But with “Hide My Email” that wouldn’t be easily possible, because the customer would have to figure out the privaterelay.appleid.com email address used for their account.
> Furthermore, if there are platforms where AnyList doesn’t support Sign in with Apple, like Android, and someone wants to log into their account, they’d have to know their privaterelay.appleid.com email address. (And that certainly won’t be easy to find if you no longer have an iOS device.) And then they’d have to create a password with us, since they wouldn’t be able to sign in using Sign in with Apple.
> Finally, for a service like AnyList, which is heavily focused on sharing lists with other people, the “Hide My Email” option greatly complicates collaboration. Typically, customers share a list by typing in the email address of the person they want to share with. If that person already has an account, the list is instantly shared. But with the “Hide My Email” option, your spouse or friends obviously won’t know your privaterelay.appleid.com email address, so when they enter your email address, our systems will believe that you don’t have an account. At that point, you’ll get an email from us asking you to create an account. If you accidentally create a new account, it won’t include the work you’ve done in your existing account created via Sign in with Apple. And if you manage not to make that mistake, then there would be a link between your email address and the account you created with Sign in with Apple, negating the value of hiding your email address.