apache常见电子邮件如何在java控制台上获取电子邮件传递通知

Question

我一直在使用JavaMailSender，但为了在我的应用程序上发送邮件通知，我查找了Apache Common Email但是无法 实现这种邮件传递状态机制。

这是我的代码：

  String smtpServer = "smtp.gmail.com";

  final String userid =  "xxxx";
  final String password = "xxxx";
  String contentType = "text/html";
  String subject = "an email to a fake address"
  String from = "xxxxx";
  String to = "xxx";//some invalid address
  String body = "Body: an email to a fake address";

  Properties props = new Properties();

  props.put("mail.smtp.auth", "true");
  props.put("mail.smtp.starttls.enable", "true");
  props.put("mail.smtp.host", smtpServer);
  props.put("mail.smtp.port", "25");
  props.put("mail.transport.protocol", "smtp");
  props.put("mail.smtp.from", from);

  Session mailSession = Session.getInstance(props,
     new javax.mail.Authenticator() {
        protected PasswordAuthentication getPasswordAuthentication() {
           return new PasswordAuthentication(userid, password);
        }
     });

  MimeMessage message = new MimeMessage(mailSession);
  message.addFrom(InternetAddress.parse(from));
  message.setRecipients(Message.RecipientType.TO, to);
  message.setSubject(subject);
  message.setContent(body, contentType);
  message.setHeader("Return-Receipt-To", "XXXXXX");
  message.setHeader("Disposition-Notification-To", "xxxxxxxx");
  SMTPMessage smtpMessage = new SMTPMessage(message);

  smtpMessage.setNotifyOptions(SMTPMessage.NOTIFY_FAILURE|SMTPMessage.NOTIFY_SUCCESS);  

  Transport transport = mailSession.getTransport();
  try {
     System.out.println("Sending ....");
     transport.connect(smtpServer, port, userid, password);
     transport.sendMessage(message,
        message.getRecipients(Message.RecipientType.TO));
     System.out.println("Sending done ...");         

  } catch (Exception e) {
     System.err.println("Error Sending: ");
     e.printStackTrace();

  }
  transport.close();

通过此代码，我可以发送收据批准通知，但我无法在我的申请中看到它。

我设法扫描邮件服务器的收件箱并在我的应用程序中显示它。

请帮助我。