Email validator
Check an address for valid syntax, disposable domains, role-based inboxes and common typos. Runs locally — nothing is sent anywhere.
What this tool checks
It checks the address syntax (RFC-style local + domain), flags disposable / throwaway domains, spots role-based addresses (info@, support@), and suggests fixes for common typos like gmial.com → gmail.com. It runs in your browser, so it cannot perform live MX or mailbox (SMTP) checks — for those you need the API.
Why this matters
- Catch typos at signup before they cause bounces and lost users.
- Block disposable addresses to cut fake accounts and fraud.
- Flag role inboxes that hurt deliverability on marketing sends.
- Improve list quality and sender reputation.
Real deliverability needs the API
This browser tool can't perform MX or SMTP checks — those require a server. The Oxide Data Validator /v1/validate/email endpoint adds live MX lookup and a continuously-updated disposable-domain blocklist, so you can verify addresses at signup with one call.
curl -X POST https://data-validator5.p.rapidapi.com/v1/validate/email \
-H "Content-Type: application/json" \
-H "X-RapidAPI-Key: YOUR_KEY" \
-H "X-RapidAPI-Host: data-validator5.p.rapidapi.com" \
-d '{"email":"name@example.com"}'FAQ
What does this email validator check?
It checks the address syntax (RFC-style local + domain), flags disposable / throwaway domains, spots role-based addresses (info@, support@), and suggests fixes for common typos like gmial.com → gmail.com. It runs in your browser, so it cannot perform live MX or mailbox (SMTP) checks — for those you need the API.
Can it tell if an email actually exists?
Not from the browser. Confirming a mailbox really exists requires an MX lookup and an SMTP probe from a server. The Oxide Data Validator API does this; this free tool covers syntax, disposable detection, role addresses and typo suggestions.
What is a disposable email address?
A disposable (or throwaway) address comes from a temporary-mail service like Mailinator or 10MinuteMail. People use them to dodge signups. Blocking them at registration reduces fake accounts, fraud and bounce rates.
Why flag role-based addresses?
Addresses like info@, sales@ or admin@ point to a shared inbox rather than a person. They cause higher complaint rates and are often disallowed by email service providers for marketing sends.
Is my input sent anywhere?
No. All checks run locally in your browser against a bundled rules + domain list. Nothing is uploaded or logged.