synapse-product/synapse/res/templates/registration.html

{% block title %}Registration{% endblock %}

{% block body %}
<p>You have asked us to register this email with a new Matrix account. If this was you, please click the link below to confirm your email address:</p>

<a href="{{ link }}">Verify Your Email Address</a>

<p>If this was not you, you can safely disregard this email.</p>

<p>Thank you.</p>
{% endblock %}