Re:Show HN: Beeper Mini – iMessage Client for Android
by JoshTriplett on Thursday December 07, 2023 @01:52PM
(#38560193)
SPF and DKIM are ways of signing a message, but it's still typically up to the recipient or the recipient's mail server to decide what to do with that signature. And they're only checkable on the recipient's mail server because email isn't properly end-to-end encrypted, and exposes metadata.
That's not to say that requiring remote attestation or blocking third party clients entirely is proportional, but Apple should (and does) play a role in spam prevention.