Regex Tester & Validator

This regular expression matches basic email addresses by looking for one or more non-whitespace characters followed by an '@' symbol, a domain name, and a top-level domain. It captures common domain structures, including an optional secondary domain extension like a country code (e.g., .uk or .au). Using the global and multiline flags allows it to efficiently extract multiple email addresses across multiple lines of text. It is well-suited for simple data extraction or validation tasks where strict email RFC compliance is not required.