Magento event observer for customer registration success

<events>
  <customer_register_success>
    <observers>
      <namespace_module_customer_register_success>
        <type>singleton</type>
        <class>Namespace_Module_Model_Observer</class>
        <method>customerRegisterSuccess</method>
      </namespace_module_customer_register_success>
    </observers>
  </customer_register_success>
</events>

class Namespace_Module_Model_Observer {
  public function customerRegisterSuccess(Varien_Event_Observer $observer) {
      $event = $observer->getEvent();
      $customer = $event->getCustomer();
      $email = $customer->getEmail();
      if($email) {
          //code to handle if customer is successfully registered
      }
  }
}