final Session session = Session.getInstance(props, auth);
session.setDebug(isDebug());
final Transport transport = session.getTransport("smtp");
try {
transport.connect();
int count = _addresses.size();
for (int i = 0; i < count; i++) {
final String mailAddress = _addresses.get(i);
final InternetAddress[] addressTo = new InternetAddress[1];
addressTo[0] = new InternetAddress(mailAddress);