def send_mail(subject, message_plain, message_html, email_from, email_to,
              custom_headers={}, attachments=()):
    """
    Build the email as a multipart message containing
    a multipart alternative for text (plain, HTML) plus
    all the attached files.
    """
    if not message_plain and not message_html:
        raise ValueError(_("Either message_plain or message_html should be not None"))

    if not message_plain:
        message_plain = html2text(message_html)

    message = {}

    message['subject'] = subject
    message['body'] = message_plain
    message['from_email'] = email_from
    message['to'] = email_to
    if attachments:
        message['attachments'] = attachments
    if custom_headers:
        message['headers'] = custom_headers

    msg = EmailMultiAlternatives(**message)
    if message_html:
        msg.attach_alternative(message_html, "text/html")
    msg.send()
dataset/ETHPy150Open bread-and-pepper/django-userena/userena/mail.py/send_mail/original