def METHOD_NAME(self):
    """Notify user that its account has been activated by a staff member"""
    became_active = self.is_active and not self._previous_active_state
    if became_active and self.last_login is None:
        try:
            # send_notification(users=(self,), label="account_active")
            from invitations.adapters import get_invitations_adapter
            current_site = Site.objects.get_current()
            ctx = {
                'username': self.username,
                'current_site': current_site,
                'site_name': current_site.name,
                'email': self.email,
                'inviter': self,
            }
            email_template = 'pinax/notifications/account_active/account_active'
            adapter = get_invitations_adapter()
            adapter.send_invitation_email(email_template, self.email, ctx)
        except Exception:
            import traceback
            traceback.print_exc()