SMTPClientTransportFactory transportFactory = NettyLMTPClientTransportFactory.createNio();
SMTPClientTransport transport = transportFactory.createPlain();
SMTPDeliveryAgent c = new LMTPDeliveryAgent(transport);
SMTPDeliveryAgentConfigImpl conf = new SMTPDeliveryAgentConfigImpl();
conf.setConnectionTimeout(2);
conf.setResponseTimeout(2);
try {
SMTPDeliveryEnvelope transaction = new SMTPDeliveryEnvelopeImpl(
"rustam@elasticinbox.com",
Arrays.asList(new String[] { TEST_ACCOUNT, "nonexistent@example.com" }),