Magento: unsubscribe link in Newsletter mail templete or in phtml page

Unsubscribe Link in Mail Template:

<a href="{{var subscriber.getUnsubscriptionLink()}}">{{var subscriber.getUnsubscriptionLink()}}</a>

Unsubscribe Link in Phtml page:

<?php 
  echo  Mage::getModel('newsletter/subscriber')->loadByEmail($email)->getUnsubscriptionLink(); 
?>