Verify Every Email, Protect Every Send

Email Validation API.

Comprehensive email validation with multiple verification checks including syntax, MX records, SMTP connection, and mailbox verification. Reduce bounces and protect your sender reputation.

Get your free API key Read the docs

Free tier, no card< 200ms responses99.9% uptime SLA

GET/v1/emailvalidatorlive

query

Response200 OK · sample

{
  "status": "ok",
  "error": null,
  "data": {
    "creationDate": null,
    "domain": "myspace.com",
    "email": "[email protected]",
    "username": "support",
    "canConnect": true,
    "hasTypo": false,
    "isValid": true,
    "isMxValid": true,
    "isSmtpValid": true,
    "isRegexValid": true,
    "smtp": {
      "valid": true,
      "reason": "Connected"
    },
    "isCompanyEmail": true,
    "isFreeEmail": false,
    "checksum": 797
  }
}

Sample response · verify to run one live call, no signup

How it works

Email Validation API

Comprehensive email validation with multiple verification checks including syntax, MX records, SMTP connection, and mailbox verification. Reduce bounces and protect your sender reputation.

Multi-layer email validation checks
Real-time SMTP verification
Disposable and temporary email detection
SPF, DKIM, and DMARC validation

1
Send one request
A single authenticated GET with the location you care about — no SDK required.
```
GET /v1/emailvalidator?query=…
x-api-key: your_key
```
2
We do the aggregation
Each request pulls from multiple upstream sources and computes the derived fields for you.
3
Get clean JSON back
One structured object, typically under 200 ms — ready to render.
```
{ creationDate, domain, email, … }
```

The response

Everything in a single call.

/v1/emailvalidatorapplication/json

creationDate—

domain"myspace.com"

email"[email protected]"

username"support"

canConnecttrue

hasTypofalse

isValidtrue

isMxValidtrue

isSmtpValidtrue

isRegexValidtrue

smtpvalid, reason

isCompanyEmailtrue

isFreeEmailfalse

checksum797

Use cases

What developers build with it.

Real applications shipping on this endpoint today — each with the numbers that made it worth wiring up.

See every use case

Real-Time Email Validation for Signup Forms

Integrate our Email Validation API directly into your signup flow. Validate emails in under 2 seconds with syntax checks, MX record verification, and disposable email detection before the user completes registration.

Block disposable and temporary emails at signupDetect typos in email domains with hasTypo flagReduce fake account creation by 80%+

80% reductionin fake account signups

Save $500+/moon email marketing costs

< 2 secondsvalidation response time

Clean Your Marketing Email Lists

Validate your email list before campaigns. Our API checks each email for validity, identifies risky addresses, and returns a clean list ready for your campaigns.

Reduce bounce rates below 2%Improve email deliverability by 20-30%Identify catch-all and role-based addresses

20-30% boostin email deliverability

$2-5 savedper invalid email removed

< 2% bouncerate after cleaning

Email Validation for Lead Qualification

Validate leads in real-time as they enter your CRM. Our API identifies company vs personal emails, and flags high-risk addresses so sales can prioritize quality leads.

Identify B2B leads with company email domainsFilter out free email providers for enterprise salesScore leads by email quality and deliverability

35% increasein sales team efficiency

50% fewerwasted outreach attempts

2x morequalified leads contacted

Start coding

Call it in your language.

Copy a working request, or install a typed SDK. Same endpoint, same key.

const res = await fetch("https://api.apiverve.com/v1/emailvalidator?email=support%40myspace.com", {
  headers: { "x-api-key": "YOUR_API_KEY" },
});
const { data } = await res.json();
console.log(data);

Included in your key

One subscription, the whole verify every email, protect every send stack.

Every related API ships with your key — no separate plans, no extra keys, one bill.

See pricing

8APIs in this bundle

99.9%uptime SLA

The bundle

emailvalidatorYou’re heremxlookup emaildisposablechecker spfvalidator dkimvalidator dmarcvalidator dnslookup domainavailability

No code required

Wire it into the tools you already run.

Ready-made recipes for Zapier, Make, and n8n — trigger on an event, and the data lands where your team works.

Google Sheets

Validate new contact list entries

WhenNew row added

ThenValidate email → update row with result

Slack

Alert on invalid signup emails

WhenNew user registered (via webhook)

ThenValidate email → post alert if invalid

Airtable

Build a verified contact database

WhenNew record created

ThenValidate email → populate verification fields

Notion

Validate CRM contact entries

WhenNew database item created

ThenValidate email → update status property

Salesforce

Validate new leads on creation

WhenNew lead created

ThenValidate email → update custom field

GitHub

Check emails on new issues

WhenNew issue opened

ThenValidate reporter email → add label

Browse all integrations

Learn

Understand the data behind the API.

Email Validation Methods Explained

Understanding the different layers of email verification and their tradeoffs.

Understanding Email Deliverability

How sender reputation, authentication, and inbox placement work.

Working with Catch-All Email Domains

Understanding catch-all domains and how to handle them in validation.

Questions about the API

What makes your email validation thorough?

We perform multiple verification checks including syntax validation, MX records lookup, SMTP connection, and mailbox verification for comprehensive email validation.

How do you handle catch-all domains?

We identify catch-all domains and flag them separately. While these domains accept all emails, we can't verify individual mailboxes.

Can I validate emails at signup in real-time?

Absolutely! Our API responds in under 2 seconds, making it perfect for real-time form validation during user registration.

Do you support bulk email validation?

Yes! Upload CSV files with up to 1 million emails. We'll validate them in parallel and return results within hours.

How can I test email validation before committing?

Try our free email validator tool instantly, or use the free tier with 1,000 validations/month to integrate into your signup flow.

Can you detect disposable email addresses?

Yes! Our validation includes disposable email detection, identifying temporary email services like 10minutemail and tempmail to prevent fake signups.

Can I validate emails in bulk?

Yes, our paid plans support high-volume validation with generous rate limits. Bulk list cleaning? You can run thousands of parallel requests for fast processing.

Do you detect email typos?

Yes! Our API detects common typos in email domains (like gmial.com instead of gmail.com) and sets the hasTypo flag to true. You can then prompt users to verify their email address.

How do you identify role-based emails?

We detect role-based addresses like info@, support@, admin@ which are often shared mailboxes. This helps you segment your email lists appropriately.

Is SMTP verification safe for my server reputation?

Yes! We use dedicated validation infrastructure and best practices to avoid being flagged as spam. Our SMTP checks are non-intrusive and respect rate limits.