docs: async def _send_email(email_, config, loop=asyncio.get_event_loop()):
      """Send an email.
  
      Args:
          email_ (email.MIMEMultipart): The email to send.
          config (defaultdict): A defaultdict.
      """
      smtp_server = get_attribute_from_config(config, EMAIL_SECTION_KEY, SMTP_SERVER_KEY)
      smtp_port = int(get_attribute_from_config(config, EMAIL_SECTION_KEY, SMTP_PORT_KEY))
      user = get_attribute_from_config(config, EMAIL_SECTION_KEY, USER_KEY)
      password = get_attribute_from_config(config, EMAIL_SECTION_KEY, PASSWORD_KEY)
      server = aiosmtplib.SMTP(hostname=smtp_server, port=smtp_port, loop=loop, use_tls=False)
      await server.connect()
      await server.starttls()
      await server.login(user, password)
      await server.send_message(email_)
      await server.quit()