msg.add_attachment

As an AI language model, I am not able to add attachments to messages. However, I can provide you with examples of how to add attachments in different programming languages:

In Python, you can use the `EmailMessage()` class from the `email` module to create and send an email message with attachments:

import smtplib
from email.message import EmailMessage

msg = EmailMessage()
msg['Subject'] = 'Email with attachments'
msg['From'] = 'sender@example.com'
msg['To'] = 'recipient@example.com'
msg.set_content('This email contains attachments')

with open('file1.txt', 'rb') as f1, open('file2.txt', 'rb') as f2:
    file1_data = f1.read()
    file2_data = f2.read()
msg.add_attachment(file1_data, maintype='text', subtype='plain', filename='file1.txt')
msg.add_attachment(file2_data, maintype='text', subtype='plain', filename='file2.txt')

with smtplib.SMTP('smtp.gmail.com', 587) as smtp:
    smtp.ehlo()
    smtp.starttls()
    smtp.login('sender@gmail.com', 'password')
    smtp.send_message(msg)

In Java, you can use the JavaMail API to create and send an email message with attachments:

import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

public class EmailExample {
    public static void main(String[] args) {
        String to = "recipient@example.com";
        String from = "sender@example.com";
        String host = "smtp.example.com";
        Properties properties = System.getProperties();
        properties.setProperty("mail.smtp.host", host);
        Session session = Session.getDefaultInstance(properties);
        try {
            MimeMessage msg = new MimeMessage(session);
            msg.setFrom(new InternetAddress(from));
            msg.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
            msg.setSubject("Email with attachments");
            MimeMultipart multipart = new MimeMultipart();
            MimeBodyPart messageBodyPart = new MimeBodyPart();
            messageBodyPart.setText("This email contains attachments");
            multipart.addBodyPart(messageBodyPart);
            messageBodyPart = new MimeBodyPart();
            DataSource source = new FileDataSource("file1.txt");
            messageBodyPart.setDataHandler(new DataHandler(source));
            messageBodyPart.setFileName("file1.txt");
            multipart.addBodyPart(messageBodyPart);
            messageBodyPart = new MimeBodyPart();
            source = new FileDataSource("file2.txt");
            messageBodyPart.setDataHandler(new DataHandler(source));
            messageBodyPart.setFileName("file2.txt");
            multipart.addBodyPart(messageBodyPart);
            msg.setContent(multipart);
            Transport.send(msg);
            System.out.println("Email sent successfully");
        } catch (MessagingException mex) {
            mex.printStackTrace();
        }
    }
}

Note: Please replace the placeholders with the actual values of your email credentials, file paths, etc.