Enterprise-Grade Email Verification API Enterprise API

Verify emails with confidence

Real-time email verification powered by advanced DNS, MX, SMTP, and AI-driven heuristics. Built for developers who demand accuracy and speed.

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99.9% Uptime

GDPR Compliant

<1s Response

Try Live Verification

Test our API in real-time

Enter an email address to see comprehensive verification results in seconds.

Make a real-time API request:

POST https://altnera.com/api/v1/verify
Content-Type: application/json
Authorization: Bearer <API_KEY>

{
  "email": "name@company.com"
}

Get API Key

Powerful Features

Everything you need for clean email lists

From syntax validation to SMTP handshakes, Altnera runs comprehensive checks to ensure your emails reach real inboxes.

AI-Assisted Heuristics

Advanced algorithms catch typos, catch-alls, role addresses, and disposable domains before they harm your sender reputation.

Direct MTA Handshakes

Real-time SMTP simulation provides definitive deliverability answers without sending a single message.

Compliance Built-In

GDPR-ready processing, SOC 2-aligned controls, and EU data residency options for regulated industries.

Blazing Fast

Parallel DNS & MX resolution with regional edge workers deliver sub-second response times at scale.

Comprehensive Checks

Deterministic validation plus AI-powered signals for maximum accuracy.

Syntax & RFC

DNS & A/AAAA

MX Records

SMTP Handshake

Disposable Detection

Role Address

SPF & DMARC

Trust Scoring

Simple Pricing

Choose your perfect plan

Start free. Scale as you grow. No contracts, cancel anytime.

Starter

Small

$5 /month

Perfect for small projects

5,000 verifications/month
Bulk CSV uploads
Full REST API access
Email support

Get Started

Growth

Best Value

$25 /month

For growing businesses

50,000 verifications/month
Priority processing
Advanced risk signals
Email & chat support
Detailed analytics

Choose Growth

Enterprise

Custom

Custom /month

For large organizations

Millions of verifications
Dedicated SSO & SAML
EU data residency
24/7 priority support
Custom SLA

Contact Sales

Fair pricing: Credits are only charged for deliverable emails. Invalid, undeliverable, or risky emails are not counted toward your quota.

Common Questions

Frequently asked questions

Everything you need to know about Altnera Email Verification

Do you ever send an email during verification?

No, we never send emails during verification. We simulate the SMTP handshake process to check deliverability without actually delivering a message to the recipient's inbox. This ensures zero impact on your sender reputation.

Is my data secure and compliant?

Absolutely. We take data security seriously:

All data is encrypted in transit (TLS) and at rest
GDPR-compliant processing with EU data residency options
SOC 2 Type II aligned security controls
Regular security audits and penetration testing

Do you support bulk verification?

Yes! We support bulk verification for files up to 5 million rows. Our system automatically deduplicates, normalizes, and streams results as they're processed. You can upload CSV or TXT files through our dashboard or API.

Unregistered

25 emails/day

Demo API key

Registered

100 emails/day

Free account

Paid Plans Available

Much higher limits with our Starter, Growth, and Enterprise plans

What's included in the free trial?

Our free trial includes:

25 email verifications per day using the demo API key (unregistered users)
100 email verifications per day for registered accounts (free)
Full access to all verification features (DNS, MX, SMTP, SPF, DMARC)
REST API access with comprehensive documentation
No credit card required

How accurate is the verification?

Our verification accuracy exceeds 98% by combining multiple validation layers: syntax validation, DNS resolution, MX record checks, real-time SMTP handshakes, SPF/DMARC analysis, and AI-powered heuristics for disposable domains and role addresses. We continuously improve our algorithms based on millions of verifications processed daily.

Can I integrate via API?

Yes! We offer a fully RESTful API with comprehensive documentation. You can integrate using:

REST API v1 - Standard HTTP endpoints
SDKs - Official libraries for JavaScript, PHP, and Python
Documentation - Complete API reference with examples

View API Documentation

Still have questions?

Contact Support