>I checked and it was because the email address that Patreon received and tried to send to Mailchimp failed. I lost a few Patreons because of this, because they thought I never sent the newsletter to them.
AFAIK apple's private relay only accepts mail signed by the corresponding developer. In other words, no third party can use the private relay address.
AFAIK apple's private relay only accepts mail signed by the corresponding developer. In other words, no third party can use the private relay address.
edit: https://developer.apple.com/forums/thread/120112