How to disable multipart while sending the mail

When sending an email using a programming language or a library, you may encounter situations where you need to disable multipart emails. Here are some ways to do so:

Using Java

When using Java's javax.mail API, you can set the MimeMultipart to null before sending the email:

MimeMessage msg = new MimeMessage(session);
msg.setSubject("Test Email");
msg.setText("Hello, World!");

// Set the multipart to null
msg.setMultipart(null);

Transport.send(msg);

Using Python (with smtplib)

When using Python's smtplib library, you can set the MIME-Version header to 1.0 and the Content-Type header to text/plain:

import smtplib
from email.mime.text import MIMEText

msg = MIMEText("Hello, World!")
msg['Subject'] = "Test Email"
msg['From'] = "[email protected]"
msg['To'] = "[email protected]"

# Set the MIME-Version and Content-Type headers
msg['MIME-Version'] = '1.0'
msg['Content-Type'] = 'text/plain'

server = smtplib.SMTP('smtp.example.com')
server.sendmail('[email protected]', '[email protected]', msg.as_string())
server.quit()

Using C# (with System.Net.Mail)

When using C#'s System.Net.Mail namespace, you can set the IsBodyHtml property to false:

using System.Net.Mail;

MailMessage msg = new MailMessage();
msg.Subject = "Test Email";
msg.Body = "Hello, World!";
msg.From = new MailAddress("[email protected]");
msg.To.Add(new MailAddress("[email protected]"));

// Set the IsBodyHtml property to false
msg.IsBodyHtml = false;

SmtpClient client = new SmtpClient();
client.Send(msg);

Using Node.js (with nodemailer)

When using Node.js's nodemailer library, you can set the text property to true:

const nodemailer = require('nodemailer');

let transporter = nodemailer.createTransport({
  host: 'smtp.example.com',
  port: 587,
  secure: false, // or 'STARTTLS'
  auth: {
    user: '[email protected]',
    pass: 'your_password'
  }
});

let mailOptions = {
  from: '[email protected]',
  to: '[email protected]',
  subject: 'Test Email',
  text: 'Hello, World!', // Set text property to true
  html: '' // Set html property to empty string
};

transporter.sendMail(mailOptions, (error, info) => {
  if (error) {
    return console.log(error);
  }
  console.log('Email sent: ' + info.response);
});

These are just a few examples of how to disable multipart emails when sending emails using different programming languages and libraries. The specific approach may vary depending on your use case and the library you're using.

Mail Knowledge

How to disable multipart while sending the mail