Email Sending Application using Java Mail API with Servlet and JSP

It is very simple to send email with Java Servlet using the Java Mail API and Java Activation Framework. This API provides classes that can be used to send simple emails. Today we have scripted an Email Sending Application with Java Servlet and JSP. You simply need an Internet connection to send email using this simple Application.

If you are not working with any IDE (Eclipse or NetBeans) , then you need add JavaMail API and Java Activation Framework(JAF) library jar files in your Classpath. Both the jar files along with other files are included in the script download folder.

Download the Script

Those who work with IDE (Eclipse or NetBeans) you can simply create a Java Web Application, and copy-paste the index.html file into index.jsp file. Then create a new Java Servlet into Source Package, name it SendMail.java and replace its code with SendMail.java file of this Script. That's it you are good to go, use it to send emails.

This script is currently configured to send emails using GMAIL ID's only. To use other email address, you simply need to add SMTP addresses of the respective email service into SendMail.java servlet.

  index.jsp :  

<form action="SendMail" method="post">
<div>To : <input type="text" name="to" class="tbox" /></div>
<div>Subject : <input type="text" name="sub" class="tbox" /></div>
<div>Message : <textarea name="msg"></textarea></div>
<div>Your Email id : <input type="text" name="eid" class="tbox" /></div>
<div>Password : <input type="password" name="pass" class="tbox" /></div>
<div><input type="submit" value="Send Email" id="btn1"/></div>
</form>

  SendMail.java :  

import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.mail.*;
import javax.mail.internet.*;

public class SendMail extends HttpServlet {
@Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {

   /*Retrieve value from the text field using getParameter() 
   method on Request object. Otherwise you can set it directly 
      also if you are not using any interface */  

         final  String to=request.getParameter("to");
         final  String subject=request.getParameter("sub");
         final  String msg=request.getParameter("msg");
         final String user=request.getParameter("eid");
         final String pass=request.getParameter("pass");

     //create an instance of Properties Class     
     Properties props = new Properties();
     
     /* Specifies the IP address of your default mail server
  for e.g if you are using gmail server as an email sever
  you will pass smtp.gmail.com as value of mail.smtp host. As 
  shown here in the coding. Change accordingly, if your email id is not an gmail id*/

     props.put("mail.smtp.host", "smtp.gmail.com");
     props.put("mail.smtp.port", "587"); //this is optional
     props.put("mail.smtp.auth", "true");
     props.put("mail.smtp.starttls.enable", "true");

     /*Pass Properties object(props) and Authenticator object   
           for authentication to Session instance */
     
    Session session = Session.getInstance(props,
                        new javax.mail.Authenticator() {                        
  protected PasswordAuthentication getPasswordAuthentication() {
   return new PasswordAuthentication(user,pass);
   }
});
   
   /* Create an instance of MimeMessage, it accept MIME types and headers */ 
    
 MimeMessage message = new MimeMessage(session);
 message.setFrom(new InternetAddress(user));
 message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));
 message.setSubject(subject);
 message.setText(msg);

  /* Transport class is used to deliver the message to the recipients */ 

 Transport.send(message);
 out.println("

"+"Email Send succesfully.."+" ");        }catch(Exception e){ e.printStackTrace();out.println(e.getMessage());} finally {            
            out.close();
        }
    }
}

We hope you like this awesome script, do comment if you face any problem. And don't forget to share this amazing and simple application. We will come up with more JSP-servlet scripts in the future.

Developer :

Abhijit Singh Java Developer and Freelancer

www.programdiary.in