def delete_user_by_email(self, id, email):
        """Deletes a specified connection user by its email.

        Args:
           id (str): The id of the connection (must be a database connection).

           email (str): The email of the user to delete.

        See: https://auth0.com/docs/api/management/v2#!/Connections/delete_users_by_email

        Returns:
            An empty dict.
        """
        return self.client.delete(self._url(id) + '/users', params={'email': email})