When creating an account, members can use Patreon's Sign in with Apple feature.
What this means for new members who use Sign in with Apple
Your fans who are new to Patreon will have the option of setting up an account and signing in with their Apple ID. If a new member signs up using this feature, they can choose to “hide” their email. This means Apple will anonymize the “email” field, and their direct email in the Relationship Manager will be hidden.
What this means for creators
Post notifications and other transactional emails (like receipts) will still reach the member via Apple’s forwarding service. However, if you email the member directly using the anonymized email, it will not reach the member’s inbox.
If you manage member memberships through your Relationship Manager to deliver benefits or communicate via email, you won't be able to contact members who’ve opted to “hide” their email.
Suggested workaround: You can still direct message the member through the Relationship manager and the member will find your message when they log in to Patreon. In cases where you’re using the member’s email address for communication, like sending newsletters, delivering benefits, etc., you can direct message them via ARM to get alternate contact information.