##Header:
if(!empty($iscritti)){//Not empty continue searching for email
   foreach($iscritti as $iscritto){
     if($iscritto['email'] == $new_email){
	$newsletter_user_exists = true;
     }
   }
}else{//No subscribers or error epic,fail
 $epic_fail = true;
}

##Body:
<?
if(isset($epic_fail) && $epic_fail){
?>
  <span>Fail</span>
<?
}
?>

LOL