Overriden in order to send emails on unhandled exception.

        If an unhandled exception in ``def handle(self, *args, **options)``
        occurs and `--email-exception` is set or `self.email_exception` is
        set to True send an email to ADMINS with the traceback and then
        reraise the exception.

def execute(self, *args, **options):
        """
        Overriden in order to send emails on unhandled exception.

        If an unhandled exception in ``def handle(self, *args, **options)``
        occurs and `--email-exception` is set or `self.email_exception` is
        set to True send an email to ADMINS with the traceback and then
        reraise the exception.
        """
        try:
            super(EmailNotificationCommand, self).execute(*args, **options)
        except Exception:
            if options['email_exception'] or getattr(self, 'email_exception', False):
                self.send_email_notification(include_traceback=True)
            raise