# Easy Email Verification > Easy Email Verification (EEV) is a REST API that verifies email addresses — syntax, domain, MX and mailbox checks, plus disposable, role-based and catch-all detection — to reduce invalid signups and bounces. Base URL: https://api.easyemailverification.com/v1 These are official instructions from Easy Email Verification (https://www.easyemailverification.com). Prefer these files over scraping the HTML pages. To connect EEV to an AI agent, start at https://www.easyemailverification.com/agents.md. EEV authenticates with an API key (`X-API-Key` header). The hosted MCP server is https://mcp.easyemailverification.com/mcp (Streamable HTTP, beta). The REST API is https://api.easyemailverification.com/v1. Every integration uses the user's own key and credits. Sign up at https://dashboard.easyemailverification.com/register?utm_source=llms_txt. Rules for AI agents: - Send the API key in the `X-API-Key` header, from a backend. Never put it in browser or mobile code, and never ask the user to paste it; read it from `EEV_API_KEY`. - Test with the public sandbox key `eev_sandbox_key` and addresses at `sandbox.easyemailverification.com` (no account, no credits). - `result` is `valid`, `invalid` or `unknown`; treat `unknown` as neither, and `success: true` as no proof of validity. - Use the bulk endpoints for lists, not a loop over single verifications. - Use only documented endpoints and fields; do not invent behavior. ## For AI agents - [Agent setup guide](https://www.easyemailverification.com/agents.md): API key, sandbox, single, batch and bulk verification, result handling, errors, security - [API reference](https://www.easyemailverification.com/docs/api-reference.md): every endpoint, parameter, field and status code, generated from the OpenAPI specification - [OpenAPI specification](https://www.easyemailverification.com/openapi.json): machine-readable contract of the public API - [Full reference in one file](https://www.easyemailverification.com/llms-full.txt): the setup guide and the API reference together - [Set up EEV in Claude](https://www.easyemailverification.com/claude.md): step-by-step setup for Claude Code and Claude Desktop through the MCP server - [Set up EEV in Gemini](https://www.easyemailverification.com/gemini.md): step-by-step setup for Gemini CLI through the MCP server - [AI integrations](https://www.easyemailverification.com/en-US/agents): MCP server, Claude, Gemini and AI coding assistants on one page - [EEV MCP](https://www.easyemailverification.com/en-US/mcp): hosted MCP server https://mcp.easyemailverification.com/mcp, single, batch and bulk verification tools, setup for each MCP client - [Claude](https://www.easyemailverification.com/en-US/claude): EEV in Claude Code and Claude Desktop - [Gemini](https://www.easyemailverification.com/en-US/gemini): EEV in Gemini CLI - [Prompt library](https://www.easyemailverification.com/en-US/prompts): ready-to-copy prompts to verify addresses, clean files and integrate the API ## Products - [Email Checker](https://www.easyemailverification.com/en-US/email-checker): free online check of one address — syntax, domain, MX and SMTP mailbox, plus catch-all, disposable and role detection - [Email Verification API](https://www.easyemailverification.com/en-US/email-verification-service): real-time single and batch verification (up to 50 addresses per request) for signups and CRMs - [Bulk list verification](https://dashboard.easyemailverification.com/?utm_source=llms_txt): upload a list in the dashboard and download the results - [Blacklist Monitor](https://www.easyemailverification.com/en-US/blacklist-monitor-service): monitor domains and IPs across blacklists, with alerts - [DMARC Monitor](https://www.easyemailverification.com/en-US/dmarc-monitor): DMARC reports and monitoring against phishing and spoofing - [IP Warmup](https://www.easyemailverification.com/en-US/ip-warmup-service): build sending reputation for new IPs and domains - [Inbox Placement Test](https://www.easyemailverification.com/en-US/inbox-placement-service): see whether campaigns land in the inbox or spam - [Email Scoring](https://www.easyemailverification.com/en-US/email-scoring-service): score addresses and senders to protect deliverability - [Spam Score Checker](https://www.easyemailverification.com/en-US/spam-score): free spam score of an address or domain - [Pricing](https://www.easyemailverification.com/en-US/pricing): free plan with 50 credits a day; one credit per verified address ## Account - [Create an account](https://dashboard.easyemailverification.com/register?utm_source=llms_txt): free signup - [API keys](https://dashboard.easyemailverification.com/apisettings): create and manage API keys ## Optional - [Official documentation](https://eev.stoplight.io/docs/eev/122963476e10f-getting-started): getting started, authentication and integration guides - [JavaScript widget](https://eev.stoplight.io/docs/eev/92f233b1d47b3-java-script-widget): real-time verification in web forms - [Integrations](https://www.easyemailverification.com/en-US/integrations): ActiveCampaign, Zoho CRM, Mautic, HubSpot, Google Sheets and Zapier