Know if an email is real
before you send.
Syntax check, live MX lookup, disposable detection, and typo correction — in a single API call.
Trusted by teams at
Accurate and fast — every single check.
Email Validator runs a full breakdown on every address: RFC 5322 syntax, live MX record lookup, disposable domain detection across 90,000+ domains, normalization, and typo suggestion for common providers.
{
"email": "[email protected]",
"valid": false,
"syntax_valid": true,
"mx_valid": false,
"disposable": false,
"normalized": "[email protected]",
"domain": "gmial.com",
"suggestion": "gmail.com"
}
Fast, uncomplicated, easy to integrate.
One POST request with a single email or up to 50 in batch. Your API key in the header. No SDK, no setup, no dependencies. The response tells you exactly what to do.
POST /v1/validation/email
Host: requiems.xyz
requiems-api-key: YOUR_API_KEY
Content-Type: application/json
{"email": "[email protected]"}
Real problems, real users.
Email Validator fits wherever contact data quality matters.
Prevent high-bounce campaigns
Verify imported lists before launching any sequence. Bounce spikes tank deliverability for every future send.
Stop fake signups at source
Real-time form validation blocks bots and throwaway emails before they inflate your subscriber count.
Keep CRM data clean
Regular validation ensures your contact base reflects real people, not dead addresses.
Trust your open rate metrics
Accurate lists make analytics reflect actual recipients, not bounces.
Block disposable addresses
Catch throwaway domains before they reduce your sender reputation.
Catch typos instantly
Spot gmial.com or outlok.com at entry and prompt a correction before the user moves on.
Use together with complementary APIs.
Email Validator works even better when paired with other Requiems APIs.
Verify both email and phone at signup, reducing fake accounts and improving lead quality.
Catch risky signups by validating contact data and blocking suspicious traffic in one flow.
Combine email validation with postal normalization for clean contact records across CRM and delivery workflows.
Frequently asked questions
Automate this with Requiems.
One API key. Email validation, plus 50+ other APIs across validation, finance, networking, and more.