if send_email:            
      current_domain = Site.objects.get_current().domain
      subject = "Activate your new account at %s" %  current_domain
      message_template = loader.get_template('registration/activation_email.txt')
      message_context = Context({ 'site_url': 'http://%s/' % current_domain,
                                        'activation_key': activation_key,
                                        'expiration_days': settings.ACCOUNT_ACTIVATION_DAYS })
        message = message_template.render(message_context)
        ga = libgmail.GmailAccount(settings.GMAIL_USERNAME, settings.GMAIL_PASSWORD)
        ga.login()
        msg = libgmail.GmailComposedMessage(to=new_user.email, subject=subject, body=message)
        ga.sendMessage(msg)