SecurityRuns locally · No upload
Email Validator
Check if an email address has valid format including @ symbol, domain, and TLD. Runs locally — no email is sent or stored.
Private by design
Everything runs in your browser. Your input is never uploaded, stored, or logged on our servers.
Works offline after load
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Frequently asked questions
Is this tool free?+
Yes. Every Utiliio utility is free with no sign-up, usage limits, or paywalls.
Do you store my data?+
No. Processing happens entirely in your browser. Your input never leaves your device.
Can I use this tool offline?+
Yes. Once the page loads, most tools continue working without an internet connection.