🚀 Features:

✅ Validates real Gmail address existence

🌐 Uses a public email validation API (API Layer)

🧩 Frontend + Backend architecture

🎨 Clean and minimal UI

⚡ Fast validation response

🔐 API key protected via environment variables

🛠 Tech Stack:

Frontend

HTML

CSS

JavaScript

Bootstrap

Backend

Node.js

Express.js

API Layer Email Validation API

🔍 How It Works

User enters a Gmail address

The frontend sends the request to the backend

The backend calls the API Layer email validation endpoint

The API checks:

Gmail domain validity

Mailbox existence

The result is returned and displayed to the user

📦 Installation & Setup 1️⃣ Clone the repository git clone https://github.com/amirkiarash/gmail_validation.git cd gmail_validation

2️⃣ Install dependencies npm install

3️⃣ Create a .env file API_KEY=your_api_layer_key_here

⚠️ Make sure .env is added to .gitignore

4️⃣ Run the application node index.js

Then open your browser and go to:

http://localhost:3500

🌐 API Used

API Layer – Email Validation API 🔗 https://apilayer.net/api/

The API checks:

Email format

Domain validity

SMTP / mailbox existence

⚠️ Notes & Limitations

Some Gmail servers may limit validation requests

API rate limits depend on your API Layer plan

Validation accuracy depends on SMTP response availability

📌 Future Improvements:

✨ Username-only input (example → example@gmail.com)

⏳ Loading spinner during validation

📊 Validation history

🌍 Support for non-Gmail domains

🚀 Live deployment (Vercel / Render)

👤 Author:

Amir Mohammadi GitHub: @amirkiarash