Email Verification Tool

This tool checks:

• Basic email format validity (regex pattern)
• Domain existence by checking for MX records

How domain verification works:

1. Extracts domain part after @
2. Queries DNS for Mail Exchange (MX) records
3. Valid if MX records exist for the domain

Note: This frontend demo uses Google's public DNS API. For production use, you would need a backend service to properly handle DNS lookups.