diff --git a/lib/Mailer/MailerError.php b/lib/Mailer/MailerError.php
index 23acb3cb84..e646b7c201 100644
--- a/lib/Mailer/MailerError.php
+++ b/lib/Mailer/MailerError.php
@@ -8,6 +8,8 @@ class MailerError {
   const LEVEL_HARD = 'hard';
   const LEVEL_SOFT = 'soft';
 
+  const MESSAGE_EMAIL_NOT_AUTHORIZED = 'The email address is not authorized';
+
   /** @var string */
   private $operation;
 
diff --git a/tests/integration/Mailer/Methods/ErrorMappers/MailPoetMapperTest.php b/tests/integration/Mailer/Methods/ErrorMappers/MailPoetMapperTest.php
index aa036637dd..f70c99e83f 100644
--- a/tests/integration/Mailer/Methods/ErrorMappers/MailPoetMapperTest.php
+++ b/tests/integration/Mailer/Methods/ErrorMappers/MailPoetMapperTest.php
@@ -59,6 +59,20 @@ class MailPoetMapperTest extends \MailPoetTest {
     ));
   }
 
+  function testGetErrorUnauthorizedEmail() {
+    $api_result = [
+      'code' => API::RESPONSE_CODE_CAN_NOT_SEND,
+      'status' => API::SENDING_STATUS_SEND_ERROR,
+      'message' => MailerError::MESSAGE_EMAIL_NOT_AUTHORIZED,
+    ];
+    $error = $this->mapper->getErrorForResult($api_result, $this->subscribers);
+
+    expect($error)->isInstanceOf(MailerError::class);
+    expect($error->getOperation())->equals(MailerError::OPERATION_SEND);
+    expect($error->getLevel())->equals(MailerError::LEVEL_HARD);
+    expect($error->getMessage())->contains('The MailPoet Sending Service did not send your latest email because the address');
+  }
+
   function testGetErrorPayloadTooBig() {
     $api_result = [
       'code' => API::RESPONSE_CODE_PAYLOAD_TOO_BIG,