Email Validator

Validate email addresses with strict RFC-style syntax checks, plus domain, TLD and disposable-provider detection with human-readable explanations for every verdict.

100% free No uploads Runs in your browser No signup

Email validator

This checks syntax against RFC 5322 rules plus practical heuristics (TLD sanity, disposable providers) — all offline in your browser. It cannot verify that a mailbox actually exists; that requires sending mail or SMTP probing, which needs a server. For signup forms, always send a confirmation email.

How to use the Email Validator

1
Open the tool above — it is already running, no install or account needed.
2
Enter your input and adjust the options to match what you need.
3
Copy or download the result — everything was processed locally in your browser.

Private by design

This tool runs 100% inside your own browser using local JavaScript — your input never touches a server. That makes it instant, offline-capable in many cases, and private even for sensitive data.

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