Send Email using Servlet

package com.sendNotification;

import java.io.*;
import java.net.*;

import java.util.Properties;
import javax.mail.AuthenticationFailedException;
import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.servlet.*;
import javax.servlet.http.*;

public class SendNotify extends HttpServlet {

protected void processRequest(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {

final String err = "./ep/error.jsp";
final String succ = "./ep/success.jsp";

String from = "my@gmail.com"; //gmail acccount
String to = request.getParameter("to");
String subject = request.getParameter("subject");
String message = request.getParameter("message");
String login = "my"; //gmail username
String password = "mymymy"; //gmail password

try {
Properties props = new Properties();
props.setProperty("mail.host", "smtp.gmail.com");
props.setProperty("mail.smtp.port", "587");
props.setProperty("mail.smtp.auth", "true");
props.setProperty("mail.smtp.starttls.enable", "true");

Authenticator auth = new SMTPAuthenticator(login, password);

Session session = Session.getInstance(props, auth);

MimeMessage msg = new MimeMessage(session);
msg.setText(message);
msg.setSubject(subject);
msg.setFrom(new InternetAddress(from));
msg.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
Transport.send(msg);

} catch (AuthenticationFailedException ex) {
request.setAttribute("ErrorMessage", "Authentication failed");

RequestDispatcher dispatcher = request.getRequestDispatcher(err);
dispatcher.forward(request, response);

} catch (AddressException ex) {
request.setAttribute("ErrorMessage", "Wrong email address");

RequestDispatcher dispatcher = request.getRequestDispatcher(err);
dispatcher.forward(request, response);

} catch (MessagingException ex) {
request.setAttribute("ErrorMessage", ex.getMessage());

RequestDispatcher dispatcher = request.getRequestDispatcher(err);
dispatcher.forward(request, response);
}
RequestDispatcher dispatcher = request.getRequestDispatcher(succ);
dispatcher.forward(request, response);

}

private class SMTPAuthenticator extends Authenticator {

private PasswordAuthentication authentication;

public SMTPAuthenticator(String login, String password) {
authentication = new PasswordAuthentication(login, password);
}

protected PasswordAuthentication getPasswordAuthentication() {
return authentication;
}
}

protected void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}

protected void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}


}