diff --git a/modules/order/src/Mail/OrderReceiptMail.php b/modules/order/src/Mail/OrderReceiptMail.php
index 5f3f7a62..781da355 100644
--- a/modules/order/src/Mail/OrderReceiptMail.php
+++ b/modules/order/src/Mail/OrderReceiptMail.php
@@ -56,6 +56,10 @@ class OrderReceiptMail implements OrderReceiptMailInterface {
     $to = isset($to) ? $to : $order->getEmail();
     if (!$to) {
       // The email should not be empty.
+\Drupal::logger('TEST')->notice('@data',
+array(
+  '@data' => 'return?',
+));
       return FALSE;
     }
 
@@ -79,7 +83,10 @@ class OrderReceiptMail implements OrderReceiptMailInterface {
     if ($customer->isAuthenticated()) {
       $params['langcode'] = $customer->getPreferredLangcode();
     }
-
+\Drupal::logger('TEST')->notice('@data',
+array(
+  '@data' => 'before sending mail',
+));
     return $this->mailHandler->sendMail($to, $subject, $body, $params);
   }
 
diff --git a/src/MailHandler.php b/src/MailHandler.php
index 273e8aeb..da315757 100644
--- a/src/MailHandler.php
+++ b/src/MailHandler.php
@@ -109,6 +109,10 @@ class MailHandler implements MailHandlerInterface {
     $event = new PostMailSendEvent($params, $message);
     $this->eventDispatcher->dispatch(CommerceEvents::POST_MAIL_SEND, $event);
 
+\Drupal::logger('TEST')->notice('message: <pre>@data</pre><br />params: <pre>@params</pre>',
+array(
+  '@data' => 'SIKER?', '@params' => print_r($params['id'], true)//print_r($message, true),
+));
     return (bool) $message['result'];
   }