text: <?xml version="1.0" encoding="utf-8"?>
  <MessageTemplate>
  	<To>{{ NewsLetterSubscription.Email }}</To>
  	<Subject>{{ Campaign.Subject }}</Subject>
  	<ModelTypes>NewsletterSubscription, Campaign</ModelTypes>
  	<Body><![CDATA[{% extends 'master' %}
  
  {% block 'body' %}
  {{ Campaign.Body }}
  {% endblock %}]]></Body>
  </MessageTemplate>