For DevelopersAPI First

Email Validation API Built for Developers

Integrate powerful email validation directly into your applications. Real-time validation, AI-driven risk scoring, and comprehensive deliverability analysis to reduce bounce rates below 2% and protect your sender reputation.

99%
Accuracy Guarantee
99.99%
Uptime SLA
$0.0018
per API call
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14-day free trial. No credit card required.

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{
  "emailAddress": "some-email@some-domain.com",
  "emailProvider": "Google",
  "emailType": "free", // disposable, private
  "isDeliverable": "no", // yes, no, unknown
  "isMailboxFull": true,
  "riskReport": {
    "score": 650, // 200–1000
    "level": "high", // lowest, low, medium, high, highest
    "baseAnalysis": [
      "instance-bounce",
      "future-bounce",
      "fraud"
    ]
  },
  "isFormatValid": true,
  "isCatchAll": false,
  "isReachable": true,
  "emailCorrection": "some-email@somedomain.com",
  "emailDNS": {
    "mx": [
      "mx1.example.com",
      "mx2.example.com"
    ]
  }
}

Developer-First Email Validation

Built by developers, for developers. Our API provides comprehensive email validation with the reliability and performance your applications demand.

AI-Powered Risk Analysis

Advanced machine learning models analyze email patterns, provider behavior, and risk indicators to provide accurate deliverability predictions and fraud detection.

Real-Time Validation

Our system performs multiple checks, from DNS validation to sending a standard request to the provider, to gather official information on whether an account exists and is active to receive emails.

Bulk Processing

Process thousands of emails asynchronously — directly via API or through the client admin. Check job status programmatically and download compiled results in JSON or CSV, making it easy to validate and score large datasets at scale.

Enterprise Security

Encryption in transit and at rest, IP allowlists, unlimited API keys, single sign-on (SSO), granular user permissions, and detailed audit reporting.

Comprehensive Data Insights

Get detailed information about email types, provider identification, disposable email detection, and deliverability confidence scores.

SDKs & Libraries

Native SDKs for Python, Node.js, PHP, and more. Clean, well-documented APIs with comprehensive error handling and retry logic built-in.

Trusted by developers worldwide

Simple Integration, Powerful Results

Get started with just a few lines of code. Our API and SDKs make integration seamless across any platform or programming language.

import { EmailInsights } from '@opportify/sdk-nodejs';

const clientEmailInsights = new EmailInsights({
  version: '1.0',
  apiKey: 'YOUR_API_KEY'
});

async function analyzeEmail() {
  try {
    const response = await clientEmailInsights.analyze({
      email: "email_to_validate@domain.com",
      enableAutoCorrection: true,
      enableAI: true, // only available on paid plans.
    });
    console.log('response', response);
  } catch (error: unknown) {
    console.error('error', error);
  }
}

analyzeEmail();

Developer Use Cases

Real-world scenarios where our Email Validation helps developers build better, more reliable applications.

Real-Time Form Validation

  • Instant Feedback: Integrate via our API or SDKs to validate emails as users type in signup and contact forms

  • Typo Correction: Automatically suggest corrections for common email typos to improve user experience and data quality.

  • Prevent Fake Signups: Block disposable emails and obvious fake addresses at the point of entry.

API Integration Patterns

  • CRM Integration: Validate leads and contacts automatically when they enter your CRM system via scheduled jobs or API workflows.

  • Marketing Automation: Integrate with platforms like HubSpot, Zapier, and Crisp to clean lists before campaigns.

  • E-commerce Checkout: Validate customer emails during checkout to ensure order confirmations and receipts are delivered.

Bulk Processing & Analytics

  • Database Cleaning: Process large email databases asynchronously with our bulk API and webhook notifications.

  • Campaign Preparation: Validate email lists before marketing campaigns to improve deliverability and reduce bounce rates.

  • Analytics & Reporting: Generate detailed reports on email quality, risk levels, and deliverability metrics for stakeholders.

Performance & Monitoring

  • Real-time Monitoring: Monitor API performance, response times, and validation accuracy with comprehensive dashboards.

  • Error Handling: Robust retry logic and error handling built into our SDKs for production-grade reliability.

  • Usage Analytics: Track API usage, monitor quotas, and optimize validation patterns for better performance.

Rapidly Expanding Integrations Ecosystem

As a dynamic startup, we're committed to rapidly expanding the integration ecosystem. Our API integrations merge the power of proprietary AI-Driven Insights products with industry-leading platforms. Join us on this exciting journey of growth and innovation, with new and exciting integrations coming your way!

Receive notification when a new integration is available.

Available integrations:

Coming soon:

Developer FAQ

How fast is the API response time?

Our API provides fast, reliable responses for single email validation. We maintain 99.99% uptime with global edge endpoints to ensure consistent performance regardless of your location.

What programming languages do you support?

We provide native SDKs and comprehensive documentation for:

How do I handle rate limits?

Our API includes proper rate limiting headers and responds with 429 status codes when limits are exceeded. Our SDKs include automatic retry logic with exponential backoff. You can also upgrade your plan for higher rate limits.

Can I process emails in bulk?

Yes! Our batch processor lets you validate large lists asynchronously via API or the client admin. Check job status programmatically and download compiled results in JSON or CSV.

How accurate is the email validation?

Our AI-driven validation achieves 99% accuracy by combining syntax validation, DNS checks, SMTP verification, and machine learning models. We continuously update our algorithms based on real-world data to maintain high accuracy.

What about data privacy and security?

We offer high‑grade security: encryption in transit and at rest, IP allowlists, unlimited API keys, single sign‑on (SSO), granular user permissions, and detailed audit reporting. We’re also GDPR‑aligned in how we process and handle data.

How do I get started with the API?

Getting started is simple:

  • 1. Sign up: Create a free account with a 14-day trial — no credit card required.
  • 2. Get API key: Generate your API key from the dashboard.
  • 3. Make your first call: Start validating emails immediately.