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A Fastify plugin that uses point-of-view and fastify-nodemailer to template and send email messages.

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autotelic/fastify-mail

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fastify-mail

A Fastify plugin that uses point-of-view and fastify-nodemailer to template and send email messages.

Usage

npm i @autotelic/fastify-mail

Setup

fastify-mail decorates the reply interface with the mail method and takes two options to get started: pov and transporter

Point-of-View

  • pov.engine should be a template engine object used to configure point-of-view

  • to see a list of engines currently supported by point-of-view with options, view docs here

  • For quick start, fastify-mail only requires the engine. For example, using nunjucks:

    fastify.register(mail, { pov: { engine: { nunjucks: require('nunjucks') } }, transporter: ... })
  • If you'd prefer to register point-of-view on your own, omit the engine option and fastify-mail will not register it.

  • If you configure point-of-view with a different decorator name, add this to the options of fastify-mail

    fastify.register(mail, { pov: { propertyName: 'POV_DECORATOR' }, transporter: ... })

Nodemailer

  • transporter should be an object defining connection data to be used as a nodemailer SMTP transport. View nodemailer's docs here

  • fastify-mail decorates fastify with nodemailer so a transporter must be defined

  • For example, using maildev:

    const transporter = {
      host: 'localhost',
      port: 1025,
      ignoreTLS: true
    }
    
    fastify.register(mail, { pov: { engine: ... }, transporter })

Example

// index.js
const mail = require("@autotelic/fastify-mail")

// register fastify-mail
fastify.register(mail, pov: { {engine: { TEMPLATE_ENGINE_OBJECT } }, transporter: { NODEMAILER_TRANSPORTER_OBJECT } })

// setup test route
fastify.get("/sendmail", async (req, reply) => {

  const message = {
    to: "[email protected]",
    from: "[email protected]",
    cc: "[email protected]",
    bcc: "[email protected]",
    subject: "This is a subject"
  }

  const opts = {
    templatePath: "path/to/my/templates/",
    context: { name: "Test Name" }
  }

  const queued = await fastify.mail.sendMail(message, opts)

  if (queued.error) {
    const { error } = queued
    reply.send(error);
  } else {
    const { messageId } = queued
    reply.send({ messageId })
  }
})

Templates

Each message must have the following templates with the file extension set in point-of-view config:

  • 'html': Contains the html template for the email.
  • 'text': Contains the text template for the email.
.
|--index.js
|--templates
    |-- html.njk
    |-- text.njk

Example Apps

See /examples/mailgun for a working example app using nodemailer-mailgun-transport.

See /examples/maildev for a working example app using MailDev

API

Decorator

This plugin decorates fastify with a mail object containing the following methods:

  • sendMail: 'function' - Calls createMessage to generate an message and uses fastify-nodemailer to send the generated email.

  • Accepts the following arguments:

    • message: 'object' This is a valid 'message' object as per the Nodemailer API

      • from: 'string' - The email address the email is to be sent from.
      • to: 'array' - Comma separated list or an array of recipients email addresses (string) that will appear on the To: field
      • cc: 'array' - Comma separated list or an array of recipients email addresses (string) that will appear on the Cc: field
      • bcc: 'array' - Comma separated list or an array of recipients email addresses (string) that will appear on the Bcc: field
      • replyTo : 'string' - An email address that will appear on the Reply-To: field
      • subject: 'string' - The subject of the email with context injected.
      • html: 'string' - The HTML version of the message as an Unicode string, with context injected.
      • text : 'string' - The plaintext version of the message as an Unicode string, with context injected
    • opts: 'object' - Object containing options:

      • templatePath: 'string' - the relative path to the message's templates.
      • context: 'object' - Object containing context for the message (such as - variables that will be used in copy)
  • Returns: 'object' with following properties:

    • accepted : 'array' of email addresses accepted - eg. [ '[email protected]' ]
    • rejected : 'array' of email addresses rejected - eg. [],
    • envelopeTime
    • messageTime
    • messageSize
    • response
    • envelope
    • messageId
  • createMessage: 'function' - Generates a message object where the data provided is updated to use templates where available with context variables injected

    • Accepts the following arguments:

      • message: 'object'
        • fields as above
      • templatePath: 'string' - the relative path to the message's templates.
      • context: 'object' - Object containing context for the message (such as - variables that will be used in copy)

      For more details on this response see the nodemailer documentation View nodemailer's docs here

Testing

Tap is used for testing. To run tests:

npm test

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A Fastify plugin that uses point-of-view and fastify-nodemailer to template and send email messages.

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