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A comment on How Popular Is “Sign in with Apple”?. Parent comment

Re:How Popular Is “Sign in with Apple”? by chirau on Tuesday January 28, 2020 @01:21PM (#22172375)
So is the unique generated email one-time use or it's persistent? Also, if an app owner gives that generated email address to a third or fourth party, and that party sends an email to the unique address, does the mail still reach my inbox? If so then what is the purpose?
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Re:How Popular Is “Sign in with Apple”? by scarface74 on Tuesday January 28, 2020 @01:27PM (#22172459)
The app developer has to tell Apple which domains are allowed to send emails to the generated address. If the domain isn't on the list, no emails will be received.
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Re:How Popular Is “Sign in with Apple”? by chirau on Tuesday January 28, 2020 @01:32PM (#22172525)
Ah ok. Pretty neat.
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