📧 PHP SMTP Contact Form (Without Composer)

A simple, secure, and production-ready PHP contact form that sends emails using SMTP without Composer.
Built with manual PHPMailer integration, input validation, and CAPTCHA protection.

## 🚀 Features

📧 SMTP Email	No `mail()` function used
📦 No Composer	Manual PHPMailer integration
🔐 Secure POST	Data not exposed in URL
🧠 CAPTCHA	Spam & bot protection
🧼 Validation	Input sanitization included
🌍 Hosting Ready	Works on localhost & live server

## 🛠️ Technologies Used

Technology	Purpose
PHP	Backend logic
PHPMailer	SMTP email handling
HTML / CSS	Form UI
SMTP	Email delivery (Gmail / Zoho / Outlook)

## 📂 Folder Structure

/project-root
├─ index.php
├─ process_contact.php
├─ /phpmailer
│  ├─ PHPMailer.php
│  ├─ SMTP.php
│  └─ Exception.php
├─ /config
│  └─ mail.example.php
└─ README.md

## ⚙️ SMTP Configuration Update credentials in process_contact.php:

SMTP Host	smtp.gmail.com
Email Username	your-email@gmail.com
App Password	Generated password
Port	587 (TLS) / 465 (SSL)

⚠️ Do NOT use your normal email password. Always use an App Password.

## 🔐 Security

POST method used
CAPTCHA verification enabled
Input sanitization
SMTP authentication (TLS / SSL)
No credentials exposed in URL

## ✅ Production Ready

This project is suitable for:

Business websites
Contact & inquiry pages
Lead generation forms
Client support systems

## 📚 Libraries & References

PHPMailer (Official GitHub):
https://github.com/PHPMailer/PHPMailer
PHPMailer Documentation:
https://github.com/PHPMailer/PHPMailer/wiki
Gmail App Password Guide:
https://support.google.com/accounts/answer/185833

## 📌 Notes

Enable 2-Step Verification for Gmail
Use App Password
Never push real credentials to GitHub
Use .gitignore for sensitive files

## 📄 License

Free to use for learning, testing, and production projects.

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