added simplenews_spool management to try to fix mandrill rejected bug

sites/all/modules/gui/materiobasemod/materio_user.module

@@ -651,3 +651,29 @@ function materio_user_get_role_by_name($name) {
   return array_search($name, user_roles());
 }
 
+
+/**
+ * Catch rejected email by mandrill, and remove them from simplenews lists
+ *
+ * @param array $result
+ *   Associative array containing the send result, including the status.
+ */
+function materio_user_mandrill_mailsend_result($result) {
+  if ($result['status'] in_array(['rejected', 'invalid', 'error'])) {
+    // remove email from pool
+    simplenews_delete_spool(['mail'=>$result['email']]);
+
+
+    if ($result['status'] in_array(['invalid'])) {
+      // unsubscribe user if mail does not exists
+      $subscriber = simplenews_subscriber_load_by_mail($result['email']);
+      if ($subscriber) {
+        simplenews_subscriber_delete($subscriber);
+      }
+      // disable user
+      $user = user_load_by_mail($result['email']);
+      $user->status = 0;
+      user_save($user->uid);
+    }
+  }
+}