SendEmail.java

public class SendEmail {
 
    public static void main(String[] args) {
        Properties props = new Properties();
        props.put("mail.smtp.host", "smtp.gmail.com");
        props.put("mail.smtp.socketFactory.port", "465");
        props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.port", "465");
 
        Session session = Session.getDefaultInstance(props, new Authenticator() {
              protected PasswordAuthentication getPasswordAuthentication() {
                    return new PasswordAuthentication("emailrementente@servidor.com", "senha");
              }
        });
 
        MimeMessage  message = new MimeMessage (session);
        message.setFrom(new InternetAddress("emailrementente@servidor.com"));
        Address[] toUser = InternetAddress 
                   .parse("emaildestinatario@servidor.com");  
        message.setRecipients(Message.RecipientType.TO, toUser);
        message.setSubject("Assunto");
        message.setText("Texto", "utf-8", "html");
    
        Transport.send(message);
    
    }
 
}