Build a Secure Email OTP Login System with Node.js | Complete Tutorial 2025

🔒 Learn to build a secure Email OTP Authentication System using Node.js!

⭐ WHAT YOU'LL LEARN:
• Complete Email-based OTP authentication flow
• Node.js backend development
• Session management & security best practices
• Gmail API integration
• Bootstrap UI implementation
• Professional-grade error handling

⚡ PROJECT FEATURES:
• Secure OTP generation & validation
• 5-minute OTP expiry system
• Modern Bootstrap UI
• Session management
• Production-ready security

📁 CHECK OUT ALL MY COURSES:
https://www.udemy.com/user/emmanuel-tweneboah-2/

🔗 USEFUL LINKS:
Final & Starter Repo :https://github.com/tweneboah/Node-crash-course/tree/main/Projects/Email-Based%20OTP%20Login%20System
Node.js: https://nodejs.org
Bootstrap: https://getbootstrap.com
Gmail API: https://developers.google.com/gmail/api

🎯 PREREQUISITES:
• Basic JavaScript knowledge
• Node.js installed
• Gmail account

⏱️ TIMESTAMPS:
00:00 - Introduction & Project Overview
00:24 - Features Overview
00:49 - Live Demo Introduction
01:11 - Login Demo & OTP Sending
01:39 - OTP Verification Process
02:04 - Project Structure & Starter Template
02:26 - VS Code Setup & Folder Structure
02:48 - Template Files Overview
03:11 - Required Packages Overview
03:33 - Package Installation
03:56 - Gmail Setup & Credentials
04:18 - Initial App Configuration
04:47 - Express Setup & Middleware
05:20 - JSON & URL Encoding Setup
05:56 - Session Management Configuration
06:27 - View Engine Setup
07:01 - Route Setup Introduction
07:28 - Homepage Route Implementation
08:33 - Server Configuration
09:12 - Browser Testing
09:38 - How It Works Route
10:11 - Template Testing
10:47 - Login Route Implementation
11:20 - OTP Logic Implementation
11:47 - Navigation Structure
12:11 - Main Logic Implementation
12:39 - Send OTP Route Setup
13:15 - OTP Generation Logic
14:04 - Session Storage Implementation
14:38 - OTP Expiry Setup
15:41 - Nodemailer Configuration
16:37 - Email Credentials Setup
17:28 - Email Sending Logic
18:20 - Verify OTP Template
19:22 - Error Handling
20:26 - Form Implementation
21:22 - OTP Verification Route
22:27 - Session Validation
23:38 - OTP Expiry Check
24:39 - Authentication Logic
25:36 - Dashboard Implementation
26:11 - Final Testing
26:39 - Logout Implementation
27:08 - Final Demo & Conclusion
#NodeJS #WebDevelopment #Programming #Authentication #JavaScript #Tutorial #Coding #WebSecurity

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