Regex Editor & Tester

Validates lowercase email addresses where the local part starts with a letter, spans 6-33 characters, and may contain letters, digits, underscores, or dots. The domain requires at least two alphanumeric characters followed by one or two dot-separated TLD segments of 2-4 chars (e.g., .com, .co.uk). With multiline and global flags, it matches emails line-by-line in bulk text, making it suitable for form validation or extracting addresses from logs and datasets.