$recipients = null;
$mailto = array();
-if ($cid && preg_match('/^[a-z0-9\-_=]+(,[a-z0-9\-_=]+)*$/i', $cid) && $CONTACTS->ready)
+if ($cid && preg_match('/^[a-z0-9\-\+\/_=]+(,[a-z0-9\-\+\/_=]+)*$/i', $cid) && $CONTACTS->ready)
{
$CONTACTS->set_page(1);
$CONTACTS->set_pagesize(100);