package com.kamalova;

// need javax.mail.jar
// maybe smtp.jar and activation.jar (?)
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.util.Properties;


public class Mail {
    public static void main(String[] args) {
        String from = "from@gmail.com"; // sender email
        String to = "to@mail.ru"; // receiver email
        String host = "smtp.gmail.com"; // mail server host

        Properties properties = System.getProperties();

        properties.setProperty("mail.smtp.socketFactory.port", "465");
        properties.setProperty("mail.smtp.socketFactory.class",
                "javax.net.ssl.SSLSocketFactory");
        properties.setProperty("mail.smtp.port", "465");
        properties.setProperty("mail.smtp.ssl.enable", "true");
        properties.setProperty("mail.smtp.host", host);
        properties.setProperty("mail.smtp.user", from);
        properties.setProperty("mail.smtp.auth", "true");
        properties.setProperty("mail.smtp.starttls.enable", "true");

        Session session = Session.getInstance(properties,
                new javax.mail.Authenticator() {
                    protected PasswordAuthentication getPasswordAuthentication() {
                        return new PasswordAuthentication("your@gmail.com", "pswd");
                    }
                }); // default session
        // поможет отловить ошибки и увидеть, что происходит:
        session.setDebug(true);

        try {
            MimeMessage message = new MimeMessage(session); // email message
            message.setFrom(new InternetAddress(from)); // setting header fields
            message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
            message.setSubject("Test Mail from Java Program"); // subject line
            // actual mail body
            message.setText("You can send mail from Java program by using mail API");

            Transport.send(message);
            System.out.println("Email Sent successfully....");

        } catch (MessagingException mex) {
            mex.printStackTrace();
        }
    }
}