How to send a mail with attachment in java

Here is an example of how to send an email with an attachment in Java using the JavaMail API:

import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;

public class SendEmailWithAttachment {
    public static void main(String[] args) {
        // Set up the email properties
        Properties props = new Properties();
        props.put("mail.smtp.host", "your-smtp-host");
        props.put("mail.smtp.port", "your-smtp-port");
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.starttls.enable", "true");

        // Create a session
        Session session = Session.getInstance(props, new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("your-email-username", "your-email-password");
            }
        });

        // Create a message
        Message message = new MimeMessage(session);
        message.setFrom(new InternetAddress("your-email-username"));
        message.setRecipients(Message.RecipientType.TO, InternetAddress.parse("recipient-email-username"));
        message.setSubject("Test Email with Attachment");

        // Create a MIME body part for the attachment
        BodyPart messageBodyPart = new MimeBodyPart();
        messageBodyPart.setText("This is a test email with an attachment.");

        // Create a MIME body part for the attachment
        MimeBodyPart attachmentBodyPart = new MimeBodyPart();
        attachmentBodyPart.attachFile("path/to/attachment/file.txt");

        // Create a Multipart object
        Multipart multipart = new MimeMultipart();
        multipart.addBodyPart(messageBodyPart);
        multipart.addBodyPart(attachmentBodyPart);

        // Set the message body
        message.setContent(multipart);

        // Send the email
        Transport.send(message);
    }
}

This code sends an email with a text body and a file attachment. You'll need to replace the placeholders with your own values:

your-smtp-host: the hostname of your SMTP server
your-smtp-port: the port number of your SMTP server
your-email-username: your email username
your-email-password: your email password
recipient-email-username: the email address of the recipient
path/to/attachment/file.txt: the path to the file you want to attach

You'll also need to add the JavaMail API to your project. You can do this by adding the following dependency to your pom.xml file (if you're using Maven):

<dependency>
    <groupId>com.sun.mail</groupId>
    <artifactId>javax.mail</artifactId>
    <version>1.6.2</version>
</dependency>

Or by downloading the JavaMail API JAR file and adding it to your project's classpath.

Note that this is just a basic example, and you may need to add additional error handling and configuration depending on your specific use case.

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How to send a mail with attachment in java