Test, validate and match regular expressions
This regex is designed to match and validate standard email addresses by checking for a local part, an '@' symbol, and a domain name ending with a 2 to 3 character top-level domain. It allows for periods and hyphens within both the local and domain parts, ensuring they are properly formatted. It is commonly used in web forms to prevent users from submitting malformed email inputs, though it strictly limits TLDs to 2-3 characters.