NodeMailer example

const nodemailer = require("nodemailer");

const sendEmail = ({ recepient, subject, body, attachments }) => {
  const { EMAIL_ADDRESS,EMAIL_PASSWORD } = process.env;

  let transportOptions = {
    host: 'smtp.example.com',
    port: 587,
    secure: false,
    requireTLS: true,
    tls: {
      rejectUnauthorized: false
    },
    auth: {
      user: EMAIL_ADDRESS,
      pass: EMAIL_PASSWORD
    }
  }

  let transporter = nodemailer.createTransport(transportOptions);

  const mailOptions = {
    from: EMAIL_ADDRESS,
    to: recepient,
    subject,
    html: body,
    attachments: attachments || null
  };

  return transporter.sendMail(mailOptions);
};

module.exports = sendEmail;


// #######
// CLASS IMPLEMENTATION

class EmailService {
  constructor(emailOpts = { recepient: '', attachments: [] }) {
    this.emailOpts = emailOpts
  }

  sendRegisterConfirmationLink(opts = { confirmationLink: '', recepient: '', body: '' }) {
    return sendEmail({
      ...this.emailOpts,
      recepient: opts.recepient,
      subject: 'Confirm your account',
      body: opts.body || `<p>Click on the link below to confirm your account: </p> <a href="${opts.confirmationLink}">Confirm account</a>`
    })
  }
}