Example of how email templates are parameterised

gistfile1.html

<!-- // Begin Module: Standard Content \\ -->
<table border="0" cellpadding="20" cellspacing="0" width="100%">
    <tr>
        <td valign="top">
            <div mc:edit="std_content00">
                <h1 class="h1">{{ subject }}</h1>
                <p>Hi {{ email.user['user_fb_name'] }},</p>
                {% if email.reward['reward_image'] %}
                  <p>Image: <img src="{{ email.reward['reward_image'] | fanzy_image_url }}"></p>
                {% endif %}
                <p>Title: '{{ email.reward['reward_title'] }}'</p>
                <p>Description: '{{ email.reward['reward_description'] | strip_html }}'</p>
                <p>Start date: {{ email.reward['reward_start'] | fanzy_time }}</p>
                <p>End date: {{ email.reward['reward_end'] | fanzy_time }}</p>
                <p>Redemption end date: {{ email.reward['reward_redemption'] | fanzy_time }}</p>
                
                {% if email.badge %}
                  <p>Reward is for badge {{ email.badge['badge_name'] }}</p>
                {% endif %}
                
                <p>Unlocked count: {{ email.unlocked }}</p>
                <p>Unique clickers count: {{ email.unique_clickers }}</p>
            </div>
</td>
    </tr>
</table>
<!-- // End Module: Standard Content \\ -->