java: Sending failed

Question

After multiple researches I can't succeed to send any mail with java

Properties props = new Properties();

props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.starttls.required", "true");
props.put("mail.transport.protocol","smtp");
props.put("mail.smtp.host", "smtp.live.com");
props.put("mail.smtp.port", "587");

Session session = Session.getDefaultInstance(props, null);
Message msg = new MimeMessage(session);
msg.setFrom(new InternetAddress("[email protected]"));
InternetAddress toAddress = new InternetAddress("[email protected]");

msg.addRecipient(Message.RecipientType.TO, toAddress);
msg.setSubject("sujet du mail de text");
msg.setText("aaa");

Transport transport = session.getTransport("smtps");
transport.connect("smtp.gmail.com", 587,"[email protected]", "mypasswordcached");
transport.send(msg);

I have Exception in thread "main" javax.mail.NoSuchProviderException: No provider for smtps I don't understand why Anyone can help me please ?

Answer 1

Try the following code:

package org.kodejava.example.mail;

import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.util.Date;
import java.util.Properties;

public class GmailSendEmailTLS {
    public static final String USERNAME = "username";
    public static final String PASSWORD = "password";

    public static void main(String[] args) throws Exception {
        //
        // Email information such as from, to, subject and contents.
        //
        String mailFrom = "[email protected]";
        String mailTo = "[email protected]";
        String mailSubject = "TLS - Gmail Send Email Demo";
        String mailText = "TLS - Gmail Send Email Demo";

        GmailSendEmailTLS gmail = new GmailSendEmailTLS();
        gmail.sendMail(mailFrom, mailTo, mailSubject, mailText);
    }

    private void sendMail(String mailFrom, String mailTo,
                          String mailSubject, String mailText)
            throws Exception {

        Properties config = createConfiguration();

        //
        // Creates a mail session. We need to supply username and
        // password for Gmail authentication.
        //
        Session session = Session.getInstance(config, new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(
                        GmailSendEmailTLS.USERNAME,
                        GmailSendEmailTLS.PASSWORD
                );
            }
        });

        //
        // Creates email message
        //
        Message message = new MimeMessage(session);
        message.setSentDate(new Date());
        message.setFrom(new InternetAddress(mailFrom));
        message.setRecipient(Message.RecipientType.TO,
                new InternetAddress(mailTo));
        message.setSubject(mailSubject);
        message.setText(mailText);

        //
        // Send a message
        //
        Transport.send(message);
    }

    private Properties createConfiguration() {
        return new Properties() {{
            put("mail.smtp.auth", "true");
            put("mail.smtp.host", "smtp.gmail.com");
            put("mail.smtp.port", "587");
            put("mail.smtp.starttls.enable", "true");
        }};
    }
}

This example taken from: Sending email using gmail via TLS