Email Validator

What makes an email valid?

A valid address has a local part, an @, and a domain with at least one dot — e.g. [email protected]. The official RFC 5322 grammar is famously complex, so this tool applies a strict but practical pattern plus length and structural checks (single @, no leading/trailing or doubled dots). It verifies syntax only — whether the mailbox actually exists requires sending mail. Validation runs entirely in your browser.