A custom action that utilizes nodemailer to send mails.

custom_email_action.js

const nodemailer = require('nodemailer');
	async function main() {
		let testAccount = await nodemailer.createTestAccount();

		let transporter = nodemailer.createTransport({
			host: 'smtp.ethereal.email',
			port: 587,
			secure: false, // true for 465, false for other ports
			auth: {
				user: testAccount.user, // generated ethereal user
				pass: testAccount.pass, // generated ethereal password
			}
		});
		let usermessage = "This is email body example";

		// Create a message object
		let message = {
			from: 'Freeman <freeman24@ethereal.email>',
			to: 'abhisheksimon@aabingunz.com, mbrown@gmail.com',
			subject: 'This is your email Subject',
			text: 'This is your email body Message: \t'+usermessage};
		// Sending message
		transporter.sendMail(message);
	}
	main().catch(console.error);