Test, validate and match regular expressions
Matches simple email addresses in the form local@domain.tld, requiring exactly one @ symbol, a dot separating the domain, and a TLD of 2-14 alphabetic characters. Both the local part and domain accept any non-whitespace characters, making it permissive and suitable for extracting emails from free-form text. It's commonly used for basic form validation or email scraping, though it's not fully RFC-compliant and may match technically invalid addresses.