MailerQ

MailerQ is a Redis-backed mailer queue system.

Installation

npm install mailer-q --save

Usage

• It is easiest to have MailerQ's configuration in another module:

config/mailers.js

const MailerQ = require("mailer-q")();

const options = {
  //Options here
};

module.exports = MailerQ.config(options);

Available Options for MailerQ Configuration

• nodemailer: Configuration object for Nodemailer. An example is shown below but all options can be found in the Nodemailer documentation here: https://nodemailer.com/smtp/.
• defaultFrom (Optional): Set the default sender
• defaultTo (Optional): Set the default recipient (not common)
• renderer (Optional): Method to render email templates
• sendAttempts (Optional): Number of times MailerQ will attempt to send your mail. Defaults to 3.
• redis (Optional): Configuration options to configure Redis. These configuration options come from ioredis and you can find all options in their documentation here: https://github.com/luin/ioredis/blob/master/API.md.

Example:

const config = {
  nodemailer: {
    host: "smtp.example.com",
    port: 587,
    auth: {
      user: "your username",
      pass: "your pass"
    }
  },
  defaultFrom: "Test Tester [e-mail]",
  defaultTo: "[e-mail]",
  sendAttempts: 5
};

Optional Renderers

• EJS Renderer: Use the EJS templating syntax.
• Handlebars Renderer: Use the Handlebars templating syntax.
• Pug Renderer: Use the Pug templating syntax.

Sending Mail

• The module has two methods - deliverNow and deliverLater.
• deliverNow will attempt to send the email message immediately, vs deliverLater will use Redis to queue this action up for a later time.
• deliverNow and deliverLater must be chained with contents, which sets up the content to be sent.

Example:

const MailerQ = require("./config/mailers");

MailerQ.contents({
  from: "Test Sender [e-mail]",
  to: "[e-mail]",
  subject: "Test message",
  htmlBody: "<h1>HTML message here!</h1>"
})
  .deliverNow()
  .then(() => {
    console.log("Message sent!");
  })
  .catch((err) => {
    console.log(err);
  });

Available Options for .contents()

• subject: Subject of message
• from (Optional): Email address of sender. Optional only if not using defaultFrom in the initial configuration.
• to (Optional): Email address of recipient. Optional only if not using defaultTo in the initial configuration.
• templateFileName (Optional): Name of file used as template (only use this if you're using a renderer plugin)
• htmlBody (Optional): HTML to send in email message
• locals (Optional): Object of local variables to be used in renderer (only use this if you're using a renderer plugin)
• attachments (Optional): Array of attachment objects as specified by Nodemailer: https://nodemailer.com/message/attachments/.