Regex Editor & Tester

This regular expression matches email addresses with complex validation for both the local part and the domain. It allows standard domain names with valid top-level domains, as well as IP address literals (both bracketed and unbracketed) for the domain part. The local part permits common characters like periods, hyphens, and plus signs, while preventing invalid starting or trailing characters. It is highly useful for input validation in forms, data extraction, and ensuring structured email formats.