MERN_STACK_TEMPLATE/backend/mailtrap/mailtrap.config.js

import { MailtrapClient } from "mailtrap"
import dotenv from "dotenv";

dotenv.config();

export const mailtrapClient = new MailtrapClient({
  token: process.env.MAILTRAP_TOKEN,
});

export const sender = {
  email: "hello@demomailtrap.co",
  name: "Mailtrap Test",
};