CFS blocks can be used in HTML emails, as well.
This can happen by using the special variables *|CFS_LINK_0|*, *|CFS_LINK_1|*, *|CFS_LINK_2|*... inside of your HTML code.
Example:
<p>
How likely are you to recommend us to a friend or colleague?
</p>
<a href="*|CFS_LINK_0|*">0</a>
<a href="*|CFS_LINK_1|*">1</a>
<a href="*|CFS_LINK_2|*">2</a>
<a href="*|CFS_LINK_3|*">3</a>
<a href="*|CFS_LINK_4|*">4</a>
<a href="*|CFS_LINK_5|*">5</a>
<a href="*|CFS_LINK_6|*">6</a>
<a href="*|CFS_LINK_7|*">7</a>
<a href="*|CFS_LINK_8|*">8</a>
<a href="*|CFS_LINK_9|*">9</a>
<a href="*|CFS_LINK_10|*">10</a>
The *|CFS_LINK_n|* will be replaced with the corresponding links from the Metrilo system upon sending the email out.
The HTML variables allow you to customize your question, and the possible answers.