vue-express-mongo-boilerplate/server/libs/mailer.js

Express NodeJS application server boilerplate with Mongo and VueJS

"use strict";

let config    	= require("../config");
let logger    	= require("../core/logger");
let nodemailer 	= require("nodemailer");
let htmlToText 	= require("nodemailer-html-to-text").htmlToText;

/* DEPRECATED: use Service.get("mailer"); */
module.exports = {
	send: function(recipients, subject, body, cb) {
		logger.info(`Sending email to ${recipients} with subject ${subject}...`);
		logger.debug("Deprecated! libs/mailer is deprecated. Use Service.get('mailer') instead!");

		let mailOptions = {
			from: config.mailer.from,
			to: recipients,
			subject: subject,
			html: body
		};

		let transporter;
		if (config.mailer.transport == "smtp") {
			transporter = nodemailer.createTransport(config.mailer.smtp);
		}
		else if (config.mailer.transport == "mailgun") {
			let mg = require("nodemailer-mailgun-transport");
			transporter = nodemailer.createTransport(mg({
				auth: {
					api_key: config.mailer.mailgun.apiKey,
					domain: config.mailer.mailgun.domain
				}
			}));
		}
		else if (config.mailer.transport == "sendgrid") {
			let sgTransport = require("nodemailer-sendgrid-transport");
			transporter = nodemailer.createTransport(sgTransport({
				auth: {
					api_key: config.mailer.sendgrid.apiKey
				}
			}));
		}

		if (transporter) {
			transporter.use("compile", htmlToText());
			transporter.sendMail(mailOptions, (err, info) => {
				if (err)
					logger.warn("Unable to send email: ", err);
				else
					logger.info("Email message sent.", info.response);
				
				if (cb)
					cb(err, info);
			});
		}
		else 
			logger.warn("Unable to send email! Invalid mailer transport: " + config.mailer.transport);
	}
};