Regex Tester & Validator

This regex validates email addresses by checking for a standard format with a username (containing letters, digits, and special characters like ._%+-), an @ symbol, a domain name (with letters, digits, dots, and hyphens), and a top-level domain. It's commonly used in forms, user registration systems, and contact information validation. Note that this regex may incorrectly accept some invalid emails due to using [A-z] instead of [A-Za-z].