Custom Email Domain Validation Demo 📧
This page serves as a live demonstration of a custom form validation script that uses a **negative lookahead** regular expression.
The script is configured to **reject** emails from the following common webmail providers for testing purposes:
- gmail.com
- yahoo.com
- outlook.com
Emails from **all other domains** (e.g., corporate or custom domains) will be considered valid.
Important Note: No emails are collected or stored by this form; it has been created solely for testing and demonstration purposes.