docs: def send_activation_email(self):
          """
          Sends a activation email to the user.
  
          This email is send when the user wants to activate their 
          newly created user.
  
          """
          context= {'user': self,
                    'protocol': get_protocol(),
                    'activation_days': defaults.ACCOUNTS_ACTIVATION_DAYS,
                    'activation_key': self.activation_key,
                    'site': Site.objects.get_current()}
  
          subject = ''.join(render_to_string(
                      'accounts/emails/activation_email_subject.txt',
                      context).splitlines())
  
          message = render_to_string(
                      'accounts/emails/activation_email_message.txt',
                      context)
          send_mail(subject,
                    message,
                    settings.DEFAULT_FROM_EMAIL,
                    [self.email,])