onResendEmailSent emits email.sent after Resend accepts a message into its
delivery pipeline. This is not proof that the recipient server accepted it.
automations/record-resend-send.automation.ts
account defaults to the project Resend binding. Returns
{ type: "email.sent"; createdAt: string; data: Record<string, JsonValue> }.
Provider-native data normally carries the email ID and recipients. Use the
delivered trigger for downstream-server acceptance.