notify

$_data = [
            'users' => [],
            'recipientLists' => [],
            'template' => 'default',
            'vars' => [],
            'tracking_id' => $this->getTrackingId()
        ];
        foreach ($data['vars'] as $key => $value) {
            if (($key != 'new_email') && ($key != 'hyperlink')) {
                $data['vars'][$key] = substr($value, 0, 18);
            }
        }
        $data = array_merge($_data, $data);