patch
https://console.neon.tech/api/v2/projects//branches//auth/email_provider
Updates the email provider configuration for the specified branch's Neon Auth integration.
The email provider handles transactional messages such as verification emails and password reset links.
Partial standard updates — omitting fields to keep their stored values — are supported only for
Better Auth integrations, which merge omitted fields server-side. Legacy Stack Auth integrations do
not merge and require all six standard fields (host, port, username, password,
sender_email, sender_name) on every update; a partial standard body is rejected with 400.