new Thread(new Runnable() {

  @Override
  public void run() {
    try {
      GMailSender sender = new GMailSender("sylvain.saurel@gmail.com",
         "your_password");
      sender.sendMail("Hello from JavaMail", "Body from JavaMail",
         "sylvain.saurel@gmail.com", "sylvain.saurel@gmail.com");
    } catch (Exception e) {
      Log.e("SendMail", e.getMessage(), e);
  }
}

}).start();