<dependency> <groupId>javax.mail</groupId> <artifactId>javax.mail-api</artifactId> <version>1.6.2</version> </dependency> Properties properties = new Properties(); properties.put("mail.smtp.host", "smtp.example.com"); properties.put("mail.smtp.port", "587"); properties.put("mail.smtp.auth", "true"); properties.put("mail.smtp.starttls.enable", "true"); Session session = Session.getDefaultInstance(properties, new javax.mail.Authenticator() { protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication("username", "password"); } }); MimeMessage message = new MimeMessage(session); message.setFrom(new InternetAddress("sender@example.com")); message.addRecipient(Message.RecipientType.TO, new InternetAddress("recipient@example.com")); message.setSubject("Hello, World!"); message.setText("This is the content of the email."); Transport.send(message);