Emails sents through relay addresses go to spam

Hello,

I’m experiencing an issue with email deliverability when sending messages through Apple’s private email relay service.

Our app uses “Sign in with Apple” and sends communication emails to users through relay addresses . Messages are successfully delivered but are consistently being placed in users’ spam or junk folders.

Configuration summary:

Domain: myapp.example

Mail server: OVH SMTP

SPF and DKIM: Active and validated

Domain and sender registered under “Sign in with Apple for Email Communication”

Messages pass SPF and DKIM checks successfully, but emails relayed by Apple’s private service are still being marked as spam.

Could anyone confirm if there are additional steps or configurations required to improve deliverability (e.g., DMARC alignment or specific header requirements)?

Thank you for your help!

Emails sents through relay addresses go to spam
 
 
Q