{% macro get_subject() -%}
    Survey "{survey_title}" for event "{event_title}" has started
{%- endmacro %}

{% macro get_html_body() -%}
    Dear user,<br>
    <br>
    The survey "{survey_title}" in the event "{event_title}" is now open.<br>
    <br>
    <br>
    You may answer the survey by clicking the link below:<br>
    {survey_link}<br>
    <br>
    Best regards<br>
    {{ session.user.full_name }}
{%- endmacro %}
