Resend Transport

To use the Resend transport, install resend via NPM:

npm i resend --save

Next, setup a mailer in the mailers object in config/mail.js, the name of the mailer can be anything but you can use smtp as well:

// config/mail.js
mailers: {
  resend: {
    transport: 'resend'
  }
}

Also set the default option in config/mails.js to resend or whatever name you call the mailer above.

// config/mails.js
default: 'resend'

Resend credentials

To set the Resend credentials, you have a couple of options:

Environment variables

Set the following environment variable:

RESEND_API_KEY=re_skskagnagnak

local.js

In development, you can specify a mailer of the same name in local.js so as to override the credentials like apiKey specified in config/mail.js

// config/local.js
mail: {
  mailers: {
    resend: {
      apiKey: 're_skskagnagnak',
      }
  }
}

config/mail.js

You can set your credentials within the mailer defintion as well:

// config/mail.js
mailers: {
  resend: {
    transport: 'resend',
    apiKey: process.env.RESEND_API_KEY
  }
}

Notice that for the apiKey in config/mail.js we are still using environment variables as its best practice not to add secrets to your codebase.