How to send an email in bcc using Nodemailer

Question

Let us say I want to send an email to [email protected] with bcc copy sent to [email protected].

When [email protected] is receiving an email he should see [email protected] in the To field, and [email protected] in the bcc field.

But when [email protected] receives the email, he is not able to see [email protected] in the To field.

I tried to create and send email using mail composer instead of transports but it is not working as expected.

I also tried cc but cc is not working as expected.

const nodemailer = require('nodemailer');
const testAccount = await nodemailer.createTestAccount();
const transporter = nodemailer.createTransport({
    host: "smtp.ethereal.email",
    auth: {
        user: testAccount.user,
        pass: testAccount.pass
    },
    tls: { rejectUnauthorized: false }
});

const mailData = {
    from: '[email protected]',
    to: '[email protected]',
    bcc: '[email protected]',
    subject: 'Sample Mail',
    html: text
}

const result = await transporter.sendMail(mailData);

console.log('Mail Sent! \t ID: ' + result.messageId);

When the email is received, I expect [email protected] to see [email protected] in the To: field.

Answer 1

See envelope

SMTP envelope is usually auto generated from from, to, cc and bcc fields in the message object but if for some reason you want to specify it yourself (custom envelopes are usually used for VERP addresses), you can do it with the envelope property in the message object.

let message = {
  ...,
  from: '[email protected]', // listed in rfc822 message header
  to: '[email protected]', // listed in rfc822 message header
  envelope: {
    from: 'Daemon <[email protected]>', // used as MAIL FROM: address for SMTP
    to: '[email protected], Mailer <[email protected]>' // used as RCPT TO: address for SMTP
  }
}

In your case following mailData should do the work:

const mailData = {
    from: '[email protected]',
    to: '[email protected]',
    bcc: '[email protected]',
    subject: 'Sample Mail',
    html: text,
    envelope: {
        from: '[email protected]',
        to: '[email protected]'
    }
}