Regex Tester & Validator

This regex attempts to validate email addresses with a simple pattern: alphanumeric characters before the @ symbol, followed by domain and TLD components. However, it contains a critical flaw - the unescaped dots (`.`) match any character instead of literal periods. This makes invalid emails like 'user@domain_com' or 'user@xacomxco' match successfully. A properly functioning email validator would need escaped dots (\.) and might include additional valid characters in the local part.