Properties props = new Properties(); props.put("mail.smtp.host", "SMTP_SERVER_ADDRESS"); props.put("mail.smtp.port", "SMTP_SERVER_PORT"); props.put("mail.smtp.auth", "true"); Session session = Session.getInstance(props, new Authenticator() { protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication("YOUR_EMAIL", "YOUR_PASSWORD"); } }); Message message = new MimeMessage(session); message.setFrom(new InternetAddress("sender@example.com")); message.setRecipients(Message.RecipientType.TO, InternetAddress.parse("recipient@example.com")); message.setSubject("Hello, World!"); message.setText("This is the message content."); Transport.send(message);