test-auth/templates/registration/activate.html

{% load i18n %}

{% block Content %}
{% if account %}
    <p>{% with account.username as username %}
    Thank you for registering!<br />
    From now on, you can login with your username ({{ username }}).<br/>
    <br/>
    <a href="{% url dreddit.views.index %}">Back</a>
    {% endwith %}
    </p>
{% else %}
    <p>Either the link was invalid, or you didn't activate your account within {{ expiration_days }} days after the registration. Please register again.</p>
{% endif %}

{% endblock %}