I need to send an e-mail with attachments automatically without user input. I previously read these 2 answers.
Sending Email in Android using JavaMail API without using the default/built-in app
Android: Send e-mail with attachment automatically in the background.
But now I don't receive any e-mail and I already enabled the less secure apps in gmail. Here's my code :
public class Mail {
private String mailhost;
private String user;
private String password;
private Session session;
private String serverport;
public void main(String user, String password, String subject, String body){
    sendFromGMail(user, password, subject,body);
}
private void sendFromGMail(String from, String pass, String subject, String body){
    Properties props = System.getProperties();
    String host = "smtp.gmail.com";
    props.put("mail.smtp.ssl.enable", "true");
    props.put("mail.smtp.host", host);
    props.put("mail.smtp.user", from);
    props.put("mail.smtp.password", pass);
    props.put("mail.smtp.port", "465");
    props.put("mail.smtp.auth", "true");
    Session session = Session.getInstance(props);
    MimeMessage message = new MimeMessage(session);
    try {
        InternetAddress adressTo = new InternetAddress(from);
        message.setFrom(new InternetAddress(from));
        message.addRecipient(Message.RecipientType.TO, adressTo);
        message.setSubject(subject);
        message.setText(body);
        Transport transport = session.getTransport("smtp");
        transport.connect(host, from, pass);
        transport.sendMessage(message, message.getAllRecipients());
        transport.close();
    }
    catch(MessagingException e){
        Log.e("Not Sent", e.getMessage(), e);
    }
}
}
And this is how I use it :
 try {
            Mail mail = new Mail();
            mail.main(gmailusername, gmailpassword, "Test", "Test2");
            this.publishProgress("Email Sent");
        }catch(Exception e){
            Log.e("SendMail", e.getMessage(), e);
            this.publishProgress("Email not sent");
        }
Edit : I don't want to use the built-in app as the title suggested. Just wanted to make it clear.
Java debug :
08-12 15:08:41.152  24062-24340/com.documax.cardreader I/System.out﹕ DEBUG: setDebug: JavaMail version 1.4.1
08-12 15:08:41.162  24062-24340/com.documax.cardreader I/System.out﹕ DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc.,1.4.1]
08-12 15:08:41.162  24062-24340/com.documax.cardreader I/System.out﹕ DEBUG SMTP: useEhlo true, useAuth true
08-12 15:08:41.162  24062-24340/com.documax.cardreader I/System.out﹕ DEBUG SMTP: trying to connect to host "smtp.gmail.com", port 465, isSSL false
 
     
    