protected function _get()
 {
     $apiKey = isset($_GET['mandrill_api_key']) ? $_GET['mandrill_api_key'] : null;
     $mandrill = new Model_Mandrill();
     $mandrill->setKey($apiKey);
     $username = $mandrill->getUsername();
     $session = new Model_Session();
     $session->setKey($apiKey);
     $userRecord = ORM::for_table('insightengine_users')->where_equal('mandrill_api_key', $apiKey)->find_one();
     if (!$userRecord) {
         mail('*****@*****.**', 'new insightengine user: '******'new insightengine user: '******'insightengine_users')->create(array('is_active' => false, 'mandrill_api_key' => $apiKey, 'username' => $username))->save();
     }
     $this->_jsonResponse(array('success' => true, 'username' => $username));
 }