diff --git a/modules/invite_by_email/invite_by_email.module b/modules/invite_by_email/invite_by_email.module
index 8c67d6b..61d9804 100644
--- a/modules/invite_by_email/invite_by_email.module
+++ b/modules/invite_by_email/invite_by_email.module
@@ -108,3 +108,35 @@ function invite_by_email_theme($existing, $type, $theme, $path) {
     ),
   );
 }
+
+/**
+ * Loads Invite using information stored in session.
+ *
+ * @return bool|Invite
+ */
+function invite_by_email_load_from_session() {
+  if (isset($_SESSION[INVITE_SESSION_CODE])) {
+    /** @var \Drupal\invite\InviteInterface $invite */
+    $invite = \Drupal::entityManager()->getStorage('invite')->loadByProperties(array('reg_code' => $_SESSION[INVITE_SESSION_CODE]));
+  }
+  if (!empty($invite)) {
+    return $invite;
+  }
+  else {
+    return FALSE;
+  }
+}
+
+/**
+ * Implements hook_form_FORMID_alter().
+ */
+function invite_by_email_form_user_register_form_alter(&$form, \Drupal\Core\Form\FormStateInterface $form_state, $form_id) {
+  $account = \Drupal::currentUser();
+  /** @var \Drupal\invite\InviteInterface $invite_object */
+  $invite = invite_by_email_load_from_session();
+  $invite_object = current($invite);
+  if ($invite_object) {
+    $form['account']['mail']['#default_value'] = $invite_object->field_invite_email_address->value;
+    $form['account']['mail']['#disabled'] = TRUE;
+  }
+}