Developer friendly

Real-Time Email Validation API

Easily integrate a powerful email verification API into your app, form, or CRM—check emails using a real-time email validation API before they hit your list.

{
  "email": "example@email.com",
  "status": "valid",
  "is_disposable": false,
  "is_role_account": false,
  "is_free_email": true,
  "mx_records_found": true,
  "smtp_check_passed": true,
  "reason": "Email is deliverable and domain has valid MX records",
  "suggested_correction": null,
  "timestamp": "2025-06-12T14:23:45Z"
}

Email Validation API For Critical Tasks

Integrate Everywhere

Flexible REST API to make it easy to plug into any stack, from forms to CRMs to custom apps.

Integrate mailerio API anywhere with CRMs, marketing tools, no-code tools, real-time API email validation

Developer Friendly

Well-documented, fully testable, and built for developers—complete with sample code, usage tracking, and a sandbox environment to get you started fast.

Test environment
Documentation
Sample codes
Usage tracking

Fast & Scalable

Fast Validation

Verify 100,000 Emails in Under 3 Minutes

Lightning-fast processing speeds so you can clean large lists or handle high-traffic endpoints without delays.

Dedicated Resources

Private Infrastructure for High-Volume Needs

Get your own dedicated server to ensure maximum speed, reliability, and performance, no shared traffic, no slowdowns.

Unlimited API keys

Integrate Across All Your Apps & Teams

Create as many API keys as needed for development, production, or separate projects. Total flexibility, zero restrictions.

detailed usage tracking and reports for api - email validation api

Detailed Usage Reports

Monitor your API activity with real-time stats, usage history, and performance insights, so you stay in control and never exceed your limits.

Built for Every Language

Our RESTful API works with any language—JavaScript, Python, C#, PHP, Ruby, Go, and more. If you can make HTTPS requests, you’re good to go.

built for every coding language illustration - email verification api

Secure Email Validation API Service

End-to-End Encryption

All email data is protected using industry-standard encryption to ensure it stays safe and private at every step.

Auto-Delete After 30 Days

All uploaded data is automatically and permanently deleted after 30 days to respect your privacy and reduce risk.

HTTPS Secured

Every request runs over secure HTTPS connections, protecting your API usage and sensitive information from interception.

Register Now To Get 100 Free Requests & Upgrade As You Scale

support@mailerio.com