Block fake signups in real time — before they pollute your funnel
Validate email addresses inline at the registration form. Catch typos, disposables, and bot addresses the moment users type them — not three campaigns later.
The problem
What goes wrong without email verification
Bots and throwaway-email tools flood free tiers with junk registrations that spike your MAU metrics, distort activation funnels, and burn email credits on welcome sequences that never convert.
Typos at sign-up create ghost accounts — the user can't verify, your drip sequence silently fails, and a month later your bounce rate climbs because you're retrying undeliverable addresses.
Filtering disposable domains by static blocklist is a whack-a-mole game — there are thousands of temporary-mail providers, and new ones appear daily. A live verification call kills the problem at the source.
The solution
How emailzeno solves it
emailzeno runs a five-layer verification pipeline — syntax, disposable-domain check, role-address flag, MX reachability, and live SMTP handshake — to give every address a human-readable verdict before you send, sync, or onboard.
Read the API docsdid_you_mean field your UI can surface as a one-click correction — recovering real users who would otherwise silently churn.See it in action
Integration in under 5 minutes
// Validate on blur — works with any form library
document.getElementById('email').addEventListener('blur', async (e) => {
const res = await fetch('https://app.emailzeno.com/api/v1/verify', {
method: 'POST',
headers: {
'Authorization': 'Bearer YOUR_API_KEY',
'Content-Type': 'application/json',
},
body: JSON.stringify({ email: e.target.value }),
});
const { result } = await res.json();
if (result.status === 'undeliverable') {
showError('This email address can\'t receive mail.');
} else if (result.did_you_mean) {
showSuggestion(`Did you mean ${result.did_you_mean}?`);
}
});
Drop-in JS: call the verify endpoint on blur, show the did_you_mean suggestion inline.
By the numbers
Why senders trust emailzeno
Accuracy isn't a marketing number — it's validated against live SMTP handshakes and independently confirmed by customers running monthly deliverability audits.
Start verifying free — no credit card
300 verifications free, forever. Integrate in under 5 minutes.
FAQ