{% block header %}{% include "mail/blocks/header.html" %}{% endblock %} {% block greetings %}{% include "mail/blocks/greetings.html" %}{% endblock %} {% block content%}{% endblock %} {% block sign_off %}{% include "mail/blocks/sign_off.html" %}{% endblock %} {% block footer %}{% include "mail/blocks/footer.html" %}{% endblock %}