Nodemailer default options issue

Question

Using Nodemailer v.6.9.4 on Node.js v18.16.0.

Doing a basic send against our hardware appliance works in both cases, but when the "from:" is a default option I get nothing in FROM: (FROM: <>)... our appliance delivers it internally anyway, but it looks funny. Tested against a gmail address and it is never delivered (which would be expected missing a FROM:). When I move it to mailOptions in sendMail, it works as expected and I get a proper FROM: in the email (delivered both internally and to my gmail address). I'm not entirely sure I've set my defaults in the transporter correctly, but I've tried a couple different ways with the same results. The docs give no example on using defaults (that I've found) but suggest this very use case, so I must be doing something wrong.

const nodemailer = require('nodemailer');

const transporter = nodemailer.createTransport({
    logger: true,
    debug: true,
    host: "my.hardware.appliance",
    port: 25,
    defaults: {
        from: '"SysAdmin" <[email protected]',
    },
})

async function monthlyStorageMetrics() {
    const doMail = await transporter.sendMail({
        //from: '"SysAdmin" <[email protected]>',
        to: "[email protected]",
        subject: "Monthly Metrics",
        text: "Your report",
    })
}

module.exports = {
    monthlyStorageMetrics,
}

Answer 1

Follow my steps to fix your question

1. Your usage is wrong, missing a matched > symbol.

change your code from <[email protected] to <[email protected]>

2. Make sure that you have the right config for your host and port

• host: pop or imap
• port: 25 or 994, or other port

3. Please follow the official API usage of defaults options, if you are not sure how to config.

let transporter = nodemailer.createTransport(options[, defaults])

https://nodemailer.com/smtp/

4. If you're still not sure if it's correct, in VS Code Ctrl-click to go to the Typescript method type the definition file, and make sure it's correct.

export function createTransport(
    transport?: SMTPTransport | SMTPTransport.Options | string,
    defaults?: SMTPTransport.Options,
): Transporter<SMTPTransport.SentMessageInfo>;
// ...

The correct default configuration is shown in the code below.

const nodemailer = require('nodemailer');

const transporter = nodemailer.createTransport({
  // Check both of the host and port is right ✅
  host: "imap.mydomain.com",
  port: 25,
  secure: true,
  auth: {
    user: "[email protected]",
    pass: "sysadmin's password",
  },
}, {
  // Here is the default message options object ✅
  from: 'SysAdmin <[email protected]>',
})

async function monthlyStorageMetrics() {
  const doMail = await transporter.sendMail({
    // from: 'SysAdmin <[email protected]>',
    to: 'ManagerJoe <[email protected]>',
    subject: "Monthly Metrics",
    text: "Your report",
  })
}

// test
monthlyStorageMetrics().catch(console.error);

// module.exports = {
//   monthlyStorageMetrics,
// }

screenshot ✅

refs

https://nodemailer.com/