What are Apple's requirements for email authentication and domain registration?

Email marketer from Sendgrid explains that to configure Sign-In with Apple, you need to add an A record to your sending domain for successful integration. This helps verify your domain and ensures proper email delivery.

Email marketer from StackOverflow user answers that for the Apple relay service, both SPF and DKIM must pass. You need to register the domain and ensure that both MAIL FROM and From address domains are properly authenticated before sending emails.

Email marketer from Reddit user shares that Apple requires full DMARC alignment for domains used with Sign in with Apple. This means that both SPF and DKIM must pass and align with the From domain to ensure deliverability.

Email marketer from Litmus explains that Apple’s Mail Privacy Protection doesn’t directly require domain registration, but it highlights the significance of good sending practices and authentication for optimal email deliverability.

Email marketer from Email on Acid shares that Apple's Mail Privacy Protection impacts how email marketers track opens. It doesn't directly enforce domain registration, but emphasizes the importance of authenticated sending practices to maintain deliverability.

Email marketer from GMass shares how DMARC and SPF authentication settings are impacted by Apple's policies, and how they work to ensure emails are delivered safely. This is critical for Apple's requirements.

Marketer from Email Geeks shares understanding that either the MAIL FROM or From address domain needs to be registered with Apple before you can deliver to their secure relay and that domain has to pass authentication - either SPF for a MAIL FROM domain or DKIM for a From address domain.

Email marketer from Mailjet explains that while Apple's Mail Privacy Protection does not directly require DMARC, having DMARC in place is crucial for ensuring deliverability and protecting your sender reputation, which is indirectly impacted by Apple's policies.

Email marketer from Reddit user answers that you need to ensure full DMARC alignment to ensure that when someone logs in using Apple ID you can send them emails. The domain must be set up correctly.

Expert from Spam Resource notes that Apple Mail Privacy Protection itself does not mandate new authentication methods. Senders should still focus on implementing SPF, DKIM, and DMARC correctly for optimal deliverability.

Expert from Word to the Wise explains that Apple Mail Privacy Protection changes affect open rates but doesn't directly change authentication requirements. Standard authentication like SPF, DKIM, and DMARC still apply to ensure deliverability to Apple users.

Expert from Email Geeks explains that you have to register the domains you're sending from with Apple, and then authenticate those domains the way they say you should (full DMARC alignment), then you can send mail.

Documentation from Apple Developer Documentation explains that to use Sign in with Apple, you must register your domains. This involves verifying that you own the domains from which you’ll be sending emails. You configure email domains in your account on the Apple Developer website.

Documentation from Apple Support describes that using a custom email domain with iCloud requires verifying the domain. This involves adding specific MX records, TXT records, and SPF records in your domain's DNS settings. Proper setup ensures iCloud Mail can send and receive emails from your custom domain.

Documentation from SparkPost explains that Apple requires senders to authenticate their email domains using SPF and DKIM. Proper authentication is essential for ensuring emails are delivered to Apple users and avoid being marked as spam.

Documentation from Apple iCloud Support describes that to use a custom email domain with iCloud Mail, you must verify the domain by adding specific DNS records, including MX, TXT, and SPF records. This setup ensures that iCloud Mail can properly send and receive emails for your domain.