def send_mails(self, messages):
        return self.app._loop.run_in_executor(
            None, self._send_mails, messages)

    # INTERNALS
Return the Key corresponding to the hierarchical wallet's subkey
dataset/ETHPy150Open quantmind/lux/lux/extensions/smtp/backend.py/EmailBackend.send_mails--crossover with--dataset/ETHPy150Open richardkiss/pycoin/pycoin/key/Key.py/Key.subkey