function storage_init($p)
    {
        $rcmail = rcmail::get_instance();

        if ($add_headers = (array)$rcmail->config->get('identity_select_headers', array())) {
            $p['fetch_headers'] = trim($p['fetch_headers'] . ' ' . strtoupper(join(' ', $add_headers)));
        }

        return $p;
    }