def send_template(subject="", html=None, text=None, rcpt=[], sender=None, context_instance=None, fail_silently=True, connection=None):
from thistle import render_to_string, Context
if not context_instance:
context_instance = Context()
if text:
body_text = render_to_string(text, context_instance)
else:
body_text = ""
msg = EmailMultiAlternatives(subject, body_text, sender, rcpt)
if html:
body_html = render_to_string(html, context_instance)
msg.attach_alternative(body_html, 'text/html')
if not connection:
connection = SMTPClient()
connection.send_message(msg)