Email Reminder Script in Nodejs (with code)

Photo by Rahul Mishra on Unsplash

1. Cron Job: Automatically run the script daily

2. Frontend Dashboard: View, add, and manage tasks

First : Cron Job Setup

We’ll use node-cron to run the email reminder every day at 9 AM.

📄 Update reminder.js:

const fs = require('fs');
const nodemailer = require('nodemailer');
const cron = require('node-cron');
// Load tasks
function loadTasks() {
  return JSON.parse(fs.readFileSync('tasks.json'));
}
// Email config
const transporter = nodemailer.createTransport({
  service: 'gmail',
  auth: {
    user: 'your.email@gmail.com',
    pass: 'your_app_password_here'
  }
});
function sendReminderEmail(task) {
  const mailOptions = {
    from: 'your.email@gmail.com',
    to: task.email,
    subject: `Task Reminder: ${task.title}`,
    text: `Hi! Just a reminder that your task "${task.title}" is due today.`
  };
  transporter.sendMail(mailOptions, (err, info) => {
    if (err) console.error('Email error:', err);
    else console.log(`Reminder sent to ${task.email}`);
  });
}
function checkDueTasks() {
  const today = new Date().toISOString().slice(0, 10);
  const tasks = loadTasks();
  tasks.forEach(task => {
    if (task.dueDate === today) sendReminderEmail(task);
  });
}
// Cron: runs every day at 9 AM
cron.schedule('0 9 * * *', () => {…