smtp: add notify_email field; fix admin notification sent to no-reply sender

app/public/request-access.php

@@ -188,9 +188,9 @@ try {
         );
         $plain = htmlToPlain($body);
 
-        $settings = SmtpRelay::getSettings($db);
-        if (!empty($settings['from_email'])) {
-            SmtpRelay::send($db, $settings['from_email'], $subject, $body, $plain);
+        $notifyEmail = SmtpRelay::getNotifyEmail($db);
+        if ($notifyEmail !== '') {
+            SmtpRelay::send($db, $notifyEmail, $subject, $body, $plain);
         }
 
         http_response_code(200);