Send Email with Attachment in Java

This example shows how to send an email with attachment in Java using Java Mail API.

To send the message using JavaMail API, SMTP server properties are required.

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 EmailAttachmentDemo {

    public static void main(String[] args) {
        EmailAttachmentDemo demo = new EmailAttachmentDemo();
        demo.sendEmail();
    }

    public void sendEmail() {
        String from = "email@example.com";
        String to = "email@example.com";
        String subject = "Important Message";
        String bodyText = "This is a important message with attachment";
        String filename = "jee-sample/src/main/resources/data.txt";

        Properties properties = new Properties();
        properties.put("mail.smtp.host", "smtp.example.com");
        properties.put("mail.smtp.port", "25");
        Session session = Session.getDefaultInstance(properties, null);

        try {
            MimeMessage message = new MimeMessage(session);
            message.setFrom(new InternetAddress(from));
            message.setRecipient(Message.RecipientType.TO, new InternetAddress(to));
            message.setSubject(subject);
            message.setSentDate(new Date());

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

            //
            // Set the email attachment file
            //
            MimeBodyPart attachmentPart = new MimeBodyPart();
            FileDataSource fileDataSource = new FileDataSource(filename) {
                @Override
                public String getContentType() {
                    return "application/octet-stream";
                }
            };
            attachmentPart.setDataHandler(new DataHandler(fileDataSource));
            attachmentPart.setFileName(fileDataSource.getName());

            Multipart multipart = new MimeMultipart();
            multipart.addBodyPart(messagePart);
            multipart.addBodyPart(attachmentPart);

            message.setContent(multipart);

            Transport.send(message);
        } catch (MessagingException e) {
            e.printStackTrace();
        }
    }

}

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 EmailAttachmentDemo {

public static void main(String[] args) {

EmailAttachmentDemo demo = new EmailAttachmentDemo();

demo.sendEmail();

}

public void sendEmail() {

String from = "email@example.com";

String to = "email@example.com";

String subject = "Important Message";

String bodyText = "This is a important message with attachment";

String filename = "jee-sample/src/main/resources/data.txt";

Properties properties = new Properties();

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

properties.put("mail.smtp.port", "25");

Session session = Session.getDefaultInstance(properties, null);

try {

MimeMessage message = new MimeMessage(session);

message.setFrom(new InternetAddress(from));

message.setRecipient(Message.RecipientType.TO, new InternetAddress(to));

message.setSubject(subject);

message.setSentDate(new Date());

// Set the email message text.

MimeBodyPart messagePart = new MimeBodyPart();

messagePart.setText(bodyText);

// Set the email attachment file

MimeBodyPart attachmentPart = new MimeBodyPart();

FileDataSource fileDataSource = new FileDataSource(filename) {

@Override

public String getContentType() {

return "application/octet-stream";

}

};

attachmentPart.setDataHandler(new DataHandler(fileDataSource));

attachmentPart.setFileName(fileDataSource.getName());

Multipart multipart = new MimeMultipart();

multipart.addBodyPart(messagePart);

multipart.addBodyPart(attachmentPart);

message.setContent(multipart);

Transport.send(message);

} catch (MessagingException e) {

e.printStackTrace();

}

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