nodemailer-relay

Relay SMTP using nodemailer

About

This library adds a relay method to nodemailer to send email using the target domain's
SMTP servers. It looks up MX records and attempts to send mail to each prioritized server
until it either sends successfully, runs out of servers to try, or has a fatal send error
on a valid server.

NOTE nodemailer is a peer dependency so that you can use the most up to date version
which means it needs to be installed along with nodemailer-relay

Installation

npm install --save nodemailer nodemailer-relay

Example

import nodemailer from 'nodemailer-relay';

nodemailer.relay({
  from: 'foo@bar.com',
  to: 'baz@qux.com',
  cc: 'baz@bar.com',
  subject: 'Foo',
  text: 'Bar Baz Qux'
}, {
  'qux.com': {
    port: 587,
    secure: false,
    auth: {
      user: 'username',
      password: 'password'
    }
  }
})
.then(info => {
  console.log(info);
});

API

relay(mailOptions[, transportOptions][, callback]) → Promise<info>

Parameters

• mailOptions - Required, nodemailer message options
• transportOptions - Optional, A map of domain name to nodemailer transport options for that domain
• callback - Optional, An error first callback function that can be used instead of the returned Promise. The second argument is an array of info

Returns

Promise<info>

Where info is an object containing the to address and send info which may include errors

Debugging

Some debug logging can be enabled by setting the environment variable DEBUG_NODEMAILER_RELAY to "true"