# Mailcheck — MCP server on mcp.ai
> Connect your Mailcheck account and use 2 tools for email straight from your AI agent. Connect with your own API key. Mailcheck is an email verification service that helps businesses validate email addresses to ensure deliverability and reduce bounce rates.

By: mcp.ai · official
Page: https://mcp.ai/mailcheck

## Connect (MCP protocol)
Remote MCP endpoint (HTTP, streamable): https://api.mcp.ai/p_mailcheck?ms=1787291520000
Add it as a custom/remote MCP connector, then authenticate when prompted.

## REST API (no MCP client required)
Every tool is also a REST endpoint, authed with a workspace API key.
Discover: GET https://api.mcp.ai/api/mailcheck/_endpoints   # public; lists every endpoint
Call:     POST https://api.mcp.ai/api/mailcheck/<endpoint>
  Authorization: Bearer sk_live_…   # create one at https://mcp.ai/settings/api-keys
  Content-Type: application/json
  Body: { …args }   →   { "ok": true, "tool": "<id>", "result": { … } }

## Developer docs
How to use (MCP or REST), markdown: https://mcp.ai/mailcheck/skill.md
Postman collection (v2.1): https://mcp.ai/mailcheck/postman.json

## Tools
- mailcheck_validate_domain(domain: string) — Tool to validate a domain for disposability, MX records, domain age, and spam indicators. Use when checking if a domain is associated with temporary email services, public email providers, or forwardi
- mailcheck_verify_email(email: string, accept_role?: boolean, accept_disposable?: boolean) — Tool to verify provided email address. Use after obtaining user email input.

## Example prompts
- "What can I do in Mailcheck?"
- "Show me a summary of my Mailcheck account"

## Links
Docs: https://mcp.ai/docs/mcps/mailcheck
Website: https://mcp.ai/mcps/mailcheck