public static void main(String[] args) {
        int port = 465;
        String host = "smtp.gmail.com";
        try
        {
            Socket socket = new Socket(host, port);
            sun.misc.BASE64Encoder encoder = new sun.misc.BASE64Encoder();
            String username = encoder.encode("testing@gmail.com".getBytes());
            String password = encoder.encode("password".getBytes());

            DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
            DataInputStream isDI = new DataInputStream(socket.getInputStream());
            BufferedReader is = new BufferedReader(new InputStreamReader(isDI));

            dos.writeBytes("HELO\r\n");
            dos.writeBytes("AUTH LOGIN");
            dos.writeBytes("\r\n");
            dos.writeBytes(username);
            dos.writeBytes("\r\n");
            dos.writeBytes(password);
            dos.writeBytes("\r\n");
            dos.writeBytes("MAIL FROM:<testing@gmail.com>\r\n");
            dos.writeBytes("\r\n");
            dos.writeBytes("RCPT TO: <testing@gmail.com\r\n");
            dos.writeBytes("DATA\r\n");
            dos.writeBytes("Subject: Email test\r\n");
            dos.writeBytes("Test 1 2 3");
            dos.writeBytes("\r\n.\r\n");
            dos.writeBytes("QUIT\r\n");

            dos.flush();

            String responseline;
            while((responseline = is.readLine())!=null) {
                    System.out.println(responseline);
            }

            is.close();
            dos.close( );
            socket.close( );
        }
        catch (IOException ex) {
            System.err.println(ex);
        }

    }