:param pixelletter_id: ID of the letter
        :return: dict containing status of the requested letter

def get_letter_status(self, pixelletter_id):
        """
        :param pixelletter_id: ID of the letter
        :return: dict containing status of the requested letter
        """
        letter_status = self._make_get_request('letters/{}'.format(pixelletter_id))

        if letter_status:
            return json.loads(letter_status)

        return None