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Introduction

Welcome to the CheckEmail.dev documentation.

CheckEmail.dev is a developer-friendly API for email validation. We help you prevent fake signups, block disposable emails, and analyze user quality by verifying email addresses before they enter your database.

Pricing Model​

We offer a hybrid pricing model designed to be developer-friendly:

  • Dashboard Validation: Free Forever & Unlimited*. You can validate emails manually or in bulk via our Dashboard without consuming credits.
  • API Validation: Credit-based. Each API request consumes 1 credit.

*Fair usage limits apply to the dashboard (300 emails / 10 minutes).

Free Credits​

When you sign up, you receive:

  • 300 One-time Credits: These never expire and get you started with the API immediately.
  • 50 Monthly Credits: Added to your account on the 1st of every month (Free plan only). Note: Monthly credits do not roll over.

Key Features​

  • Disposable Email Detection: We block thousands of temporary email providers (e.g., mailinator, temp-mail).
  • Alias Detection: We identify email aliases (e.g., [email protected]) and resolve them to their canonical address ([email protected]).
  • Equivalent Domain Detection: We identify domains that share the same inbox (e.g., proton.me and pm.me).
  • Role-Based Detection: We flag generic addresses like admin@, support@, or sales@ which are often not personal accounts.
  • MX Record Validation: We verify that the domain has valid mail servers configured.
  • Syntax Validation: We ensure the email follows standard RFC formats.
  • Webhooks: Receive validation events directly to your backend.

How it works​

  1. You send a GET request to our API with an email address.
  2. We perform syntax checks, DNS lookups, and run our classification engine.
  3. We return a JSON response with a status, confidence_score, and detailed classification data (aliases, roles, etc.).

Getting Started​

To start using the API, you'll need an API Key.

  1. Sign up for an account
  2. Generate an API Key in your Dashboard.
  3. Make your first request.
curl -H "x-api-key: YOUR_API_KEY" \
     "https://api.checkemail.dev/[email protected]"
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