{% if from_email != envelope_from %}
Envelope-From: {{ envelope_from }}
{% endif %}
From: {{ from_email }}
{% if reply_to %}
Reply to:
{% for email in reply_to %}
{{ email }}
{% endfor %}
{% endif %}
To:
{% for recipient in recipients %}
{{ recipient }}
{% endfor %}
Subject: {{subject}}
{% autoescape off %}
{{ html_message }}
{% endautoescape %}