Classify any email address in one API call

Detect Google Workspace vs Gmail, Microsoft 365 vs Outlook.com, business vs personal, disposable vs real. One request. One JSON.

20+
providers detected
<50ms
Sub-50ms response
50+
disposable domains
99.9%
99.9% uptime

Built for developers who need to know

Qualify B2B Signups

Instantly identify if an email is a real business account or a free personal one.

Block Fake Accounts

Block disposable and personal emails at signup to reduce fraud.

Enrich Lead Data

Add provider and type information to your CRM leads automatically.

Segment Your Users

Treat business and personal users differently from day one.

Protect Free Trials

Prevent trial abuse via disposable email addresses.

Clean Your Lists

Identify personal emails hiding in your B2B mailing lists.

Simple to integrate

cURL
curl "https://api.emailclassifier.com/v1/[email protected]" \
  -H "Authorization: Bearer sk_live_your_api_key"

# Response:
{
  "success": true,
  "domain": "stripe.com",
  "provider": {
    "id": "google_workspace",
    "name": "Google Workspace",
    "type": "business"
  },
  "classification": {
    "is_business": true,
    "is_free": false,
    "is_disposable": false,
    "is_custom_domain": true
  },
  "confidence": 0.98
}

How it works

1

Get your API key

Sign up for free and get your API key instantly.

2

Send a request

A simple GET request with the email to classify.

3

Get the classification

Structured JSON with provider, type, and confidence score.

Simple, transparent pricing

Start free. Scale as you grow.

Free

$0/month

500 requests/month

  • 500 requests/month
  • 1 API keys
  • Full classification
Get Started

Starter

$14/month

5,000 requests/month

  • 5,000 requests/month
  • 3 API keys
  • Custom whitelist/blacklist
  • Email support
Subscribe
Popular

Growth

$34/month

25,000 requests/month

  • 25,000 requests/month
  • 5 API keys
  • Custom whitelist/blacklist
  • Priority support
Subscribe

Scale

$79/month

100,000 requests/month

  • 100,000 requests/month
  • 10 API keys
  • Custom whitelist/blacklist
  • Priority support
Subscribe

Frequently asked questions

What exactly does EmailClassifier do?
EmailClassifier analyzes email addresses or domains to identify the email provider (Google Workspace, Gmail, Microsoft 365, etc.) and classify it as business, personal, disposable, or self-hosted.
How is this different from email verification?
Email verification checks if an email exists and can receive mail. EmailClassifier identifies the provider and type without sending any email. They are complementary tools.
How accurate is the classification?
We achieve 98%+ accuracy for major providers like Google Workspace, Gmail, Microsoft 365, and Outlook.com. Less common providers may have lower confidence scores.
Is this GDPR compliant?
Yes. We only analyze publicly available DNS records (MX, SPF). We do not store the emails submitted via the API.
What happens if I exceed my monthly limit?
You'll receive a 429 response. You can upgrade your plan at any time to get more requests.
Can I use it for free?
Yes! The free plan includes 500 requests per month with full classification capabilities.

Start classifying emails today

Free plan available. No credit card required.

Get Free API Key