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

{% extends "_base.html" %}
{% block title %}Request to add an email address to your Matrix account{% endblock %}

{% block body %}
<p>A request to add an email address to your Matrix account has been received. If this was you, please click the link below to confirm adding this email:</p>
<a href="{{ link }}">{{ link }}</a>
<p>If this was not you, you can safely ignore this email. Thank you.</p>
{% endblock %}