📧 Bulk Email Existence Checker (PHP)

A simple PHP web app that checks if up to 10 email addresses really exist by:

• Validating format
• Looking up MX records
• Attempting SMTP handshake (RCPT TO)

⚠️ Note: Due to privacy rules, some providers (like Gmail, Yahoo, Outlook) may always return "unknown" even if the email does not exist. The only 100% reliable way is sending a verification email.

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🚀 Features

• ✅ Bulk check (up to 10 emails at once)
• ✅ Clean web interface
• ✅ Shows results in a table with friendly icons
• ✅ Simple PHP code, no external libraries

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Example

Email	Status
test@gmail.com	✅ Exists
fake123@domain.com	❌ Not Exists
hello@unknownhost.io	⚠️ Unknown

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🛠️ Installation

1. Clone this repo:

   git clone https://github.com/DigitalEforce/php-email-checker.git

2. Place in your PHP server (XAMPP, WAMP, or hosting).
   Example (Windows WAMP):

   C:\wamp64\www\php-email-checker\
   

3. Open in browser:

   http://localhost/php-email-checker/index.php
   

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📋 Usage

1. Enter up to 10 emails (one per line)
2. Click Check Emails
3. See results: ✅ Exists / ❌ Not Exists / ⚠️ Unknown

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⚠️ Limitations

• Some big providers block SMTP checks → results may show as unknown.
• This script should be used for educational / personal projects, not bulk marketing.
• For production-grade validation, consider APIs like:
  • Hunter.io
  • NeverBounce
  • ZeroBounce

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👨‍💻 About

Created by Naveed 💻

• GitHub: DigitalEforce

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