add reply_to message field about django-mailer HOT 5 CLOSED

Traceback (most recent call last):
  File "/home/hurbina/src/unab/uddo/manage.py", line 19, in <module>
    execute_from_command_line(sys.argv)
  File "/usr/lib/python3.5/site-packages/django/core/management/__init__.py", line 354, in execute_from_command_line
    utility.execute()
  File "/usr/lib/python3.5/site-packages/django/core/management/__init__.py", line 346, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/usr/lib/python3.5/site-packages/django/core/management/base.py", line 394, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/usr/lib/python3.5/site-packages/django/core/management/base.py", line 445, in execute
    output = self.handle(*args, **options)
  File "/usr/lib/python3.5/site-packages/django/core/management/base.py", line 661, in handle
    return self.handle_noargs(**options)
  File "/usr/lib/python3.5/site-packages/mailer/management/commands/send_mail.py", line 30, in handle_noargs
    send_all()
  File "/usr/lib/python3.5/site-packages/mailer/engine.py", line 130, in send_all
    email.send()
  File "/usr/lib/python3.5/site-packages/django/core/mail/message.py", line 303, in send
    return self.get_connection(fail_silently).send_messages([self])
  File "/usr/lib/python3.5/site-packages/django/core/mail/backends/smtp.py", line 107, in send_messages
    sent = self._send(message)
  File "/usr/lib/python3.5/site-packages/django/core/mail/backends/smtp.py", line 121, in _send
    message = email_message.message()
  File "/usr/lib/python3.5/site-packages/django/core/mail/message.py", line 273, in message
    if self.reply_to:
AttributeError: 'EmailMultiAlternatives' object has no attribute 'reply_to'