Sending email with attachment using JavaMail API

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 download these jar files (or) go to the Oracle site to download the latest version.

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 using JavaMail API

import java.util.*;  

import javax.mail.*;  

import javax.mail.internet.*;  

import javax.activation.*;  

  

class SendAttachment{  

 public static void main(String [] args){  

  

  String to="example@gmail.com";//change accordingly  

  final String user="example@gmail.com";//change accordingly  

  final String password="xxxxx";//change accordingly  

   

  //1) get the session object    

//GMail via TLS

 Properties properties = System.getProperties();  

 properties.put("mail.smtp.host", "smtp.gmail.com");  

 properties.put("mail.smtp.auth", "true");  

 properties.put("mail.transport.protocol", "smtps");

 properties.put("mail.smtp.port", "587");

 properties.put("mail.smtp.starttls.enable", "true");

 // GMail via SSL

/*properties.put("mail.smtp.host", "smtp.gmail.com");

properties.put("mail.smtp.socketFactory.port", "465");

properties.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");

properties.put("mail.smtp.auth", "true");

properties.put("mail.smtp.port", "465");*/

   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();}  

 }  

}

You can download full source code Here.

Reference:

http://www.javatpoint.com/example-of-sending-attachment-with-email-using-java-mail-api

http://www.mkyong.com/java/javamail-api-sending-email-via-gmail-smtp-example/