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Sending email with attachment in Java

Sending email with attachment in Java

In this guide we will discuss about Sending email with attachment in Java. For sending email with attachment, JavaMail API provides some useful classes like BodyPart, MimeBodyPart etc.

For better understanding of this example, learn the steps of sending email using JavaMail API first.

For sending the email using JavaMail API, you need to load the two jar files:

  • mail.jar
  • activation.jar

Sending email with attachment using JavaMail API

There are total 7 steps for sending attachment with email. They are:

  1. Get the session object
  2. compose message
  3. create MimeBodyPart object and set your message text
  4. create new MimeBodyPart object and set DataHandler object to this object
  5. create Multipart object and add MimeBodyPart objects to this object
  6. set the multiplart object to the message object
  7. send message

Example of sending email with attachment in Java

import java.util.*;  
import javax.mail.*;  
import javax.mail.internet.*;  
import javax.activation.*;  
  
class SendAttachment{  
 public static void main(String [] args){  
  
  String to="[email protected]";//change accordingly  
  final String user="[email protected]";//change accordingly  
  final String password="xxxxx";//change accordingly  
   
  //1) get the session object     
  Properties properties = System.getProperties();  
  properties.setProperty("mail.smtp.host", "mail.adglob.in");  
  properties.put("mail.smtp.auth", "true");  
  
  Session session = Session.getDefaultInstance(properties,  
   new javax.mail.Authenticator() {  
   protected PasswordAuthentication getPasswordAuthentication() {  
   return new PasswordAuthentication(user,password);  
   }  
  });  
     
  //2) compose message     
  try{  
    MimeMessage message = new MimeMessage(session);  
    message.setFrom(new InternetAddress(user));  
    message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));  
    message.setSubject("Message Aleart");  
      
    //3) create MimeBodyPart object and set your message text     
    BodyPart messageBodyPart1 = new MimeBodyPart();  
    messageBodyPart1.setText("This is message body");  
      
    //4) create new MimeBodyPart object and set DataHandler object to this object      
    MimeBodyPart messageBodyPart2 = new MimeBodyPart();  
  
    String filename = "SendAttachment.java";//change accordingly  
    DataSource source = new FileDataSource(filename);  
    messageBodyPart2.setDataHandler(new DataHandler(source));  
    messageBodyPart2.setFileName(filename);  
     
     
    //5) create Multipart object and add MimeBodyPart objects to this object      
    Multipart multipart = new MimeMultipart();  
    multipart.addBodyPart(messageBodyPart1);  
    multipart.addBodyPart(messageBodyPart2);  
  
    //6) set the multiplart object to the message object  
    message.setContent(multipart );  
     
    //7) send message  
    Transport.send(message);  
   
   System.out.println("message sent....");  
   }catch (MessagingException ex) {ex.printStackTrace();}  
 }  
}

As you can see in the above example, total 7 steps are followed to send email with attachment. Now run this program by :

Load the jar filec:\> set classpath=mail.jar;activation.jar;.;
compile the source filec:\> javac SendAttachment.java
run byc:\> java SendAttachment

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