def save(self, *args, **kwargs):
    if self.pk:
      deuda_actual = Enterprise.objects.get(pk=self.pk).ammount_of_doubt
      if self.has_doubt:
        if self.ammount_of_doubt != deuda_actual:
          should_send_email = True
        else:
          should_send_email = self.has_doubt

      if should_send_email:
      #if self.ammount_of_doubt != deuda_actual:
          mensaje = """Hola asdasda """"
          send_mail('Notificacion',mensaje,'misclientes@pescatun.alinet.cu',    [self.email],
          fail_silently=True,)
          #template = get_template("clientes.html").render()
          #notification.attach(template, "text/html")
          self.emailed = True
    super(Enterprise, self).save(*args, **kwargs)