emailvalidation.io API Documentation

Use the emailvalidation.io API to retrieve information about any email address and seamlessly integrate it into your product using one of our many SDKs or other pre-built integrations.

Quickstart Explore SDKs OpenAPI spec

Building with an AI assistant? The full API is available as a machine-readable OpenAPI 3.1 specification, and the documentation is published as llms.txt / llms-full.txt. There is also a hosted MCP server at https://api.emailvalidation.io/mcp that AI agents can connect to directly.

Getting started

To get started, you have to register an API key here. Then, follow our quickstart guide or continue reading our documentation and integrate emailvalidation.io, using our HTTP API and dedicated client SDKs. Ultimately, upgrade your plan to access all data & endpoints.

Get your API key

Guides

SDKs

Developer experience matters to us. Integrate emailvalidation using one of our pre-built integrations.

Authentication

Learn how to authenticate with our API using HTTP headers or GET parameters.

Rate Limit & Quotas

Understand which endpoints count towards your monthly request quota and impact your rate limit.

Request Status Codes

Read about the different success & error status codes returned by the emailvalidation API.

API Status

Learn how to programatically retrieve your API quota and check whether the API is up.

Email Validation & Verification

Learn how to retrieve information about any email address.