How do I send an email with attachment?

In this example we create a small program to send email with a file attachment. To send message with attachment we need to create an email with javax.mail.Multipart object which basically will contains the email text message and then add a file to the second block, which both of them is an object of javax.mail.internet.MimeBodyPart. In this example we also use the javax.activation.FileDataSource.

package org.kodejava.example.mail;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import java.util.Date;
import java.util.Properties;

public class SendEmailWithAttachment {
    public static void main(String[] args) {
        SendEmailWithAttachment demo = new SendEmailWithAttachment();

    public void sendEmail() {
        // Defines the E-Mail information.
        String from = "";
        String to = "";
        String subject = "Important Message";
        String bodyText = "This is a important message with attachment.";

        // The attachment file name.
        String attachmentName = "/Users/wsaryada/Documents/data.pdf";

        // Creates a Session with the following properties.
        Properties props = new Properties();
        props.put("", "");
        props.put("mail.transport.protocol", "smtp");
        props.put("mail.smtp.starttls.enable", "true");
        Session session = Session.getDefaultInstance(props);

        try {
            InternetAddress fromAddress = new InternetAddress(from);
            InternetAddress toAddress = new InternetAddress(to);

            // Create an Internet mail message.
            MimeMessage message = new MimeMessage(session);
            message.setRecipient(Message.RecipientType.TO, toAddress);
            message.setSentDate(new Date());

            // Set the email message text.
            MimeBodyPart messagePart = new MimeBodyPart();

            // Set the email attachment file
            FileDataSource fileDataSource = new FileDataSource(attachmentName);

            MimeBodyPart attachmentPart = new MimeBodyPart();
            attachmentPart.setDataHandler(new DataHandler(fileDataSource));

            // Create Multipart E-Mail.
            Multipart multipart = new MimeMultipart();


            // Send the message. Don't forget to set the username and password 
            // to authenticate to the mail server.
            Transport.send(message, "kodejava", "**********");
        } catch (MessagingException e) {

Maven Dependencies


Wayan Saryada

Programmer, runner, recreational diver, currently living in the island of Bali, Indonesia. Mostly programming in Java, creating web based application with Spring Framework, Hibernate / JPA.


  1. Hi, I followed your code and its works for me but I want file name as dynamic, for example user uploaded file as attachment. I am using Struts 1.x. Please help me.


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