MAILTYPE — Email Domain Capability Intelligence MCP Server

by gsterlingpress Your server? Claim it

answering

MAILTYPE — Email Domain Capability Intelligence is answering right now. Last checked 10 min ago. Last commit 14 Aug 2026.

Email-domain intelligence: MX capability, provider, disposable status, SPF, DMARC, and MTA-STS.

Uptime history 18 days of history · worst day 97%

18 days agonow

100.0%

Uptime 24h

91 of 91 checks

—

Tools

hidden behind auth

2427 ms

Response time

average over 24h

Stars

last commit 14 Aug 2026

MAILTYPE — Email Domain Capability Intelligence does not always answer

Over the last week it answered 99.4% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 10 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add mailtype --transport http https://mailtype-api.onrender.com/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "mailtype": {
      "url": "https://mailtype-api.onrender.com/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.mailtype]
url = "https://mailtype-api.onrender.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "mailtype": {
      "url": "https://mailtype-api.onrender.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "mailtype": {
      "url": "https://mailtype-api.onrender.com/mcp"
    }
  }
}

This endpoint answered with an authorization challenge — the server is running, but you need an API key or OAuth to use it.

Endpoints

URL	Transport	State	Latency	Checked
https://mailtype-api.onrender.com/mcp	streamable-http	needs key	403 ms	10 min ago

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MAILTYPE — Email Domain Capability Intelligence — questions

Answers built from our own checks of this server.

Why is there no tool list for MAILTYPE — Email Domain Capability Intelligence?

The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 100.0% of checks in the last 24 hours got a reply.

Is MAILTYPE — Email Domain Capability Intelligence working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 2427 ms. The bar chart above shows every period we have measured.

How do I connect MAILTYPE — Email Domain Capability Intelligence?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You will need your own key or an OAuth login: it refuses anonymous clients.

Does MAILTYPE — Email Domain Capability Intelligence need an API key?

Yes. Every time we knock, MAILTYPE — Email Domain Capability Intelligence answers with an authorization challenge instead of its tool list — that is how we know it is running and gated rather than broken. Bring your own credentials and it will talk.

Is MAILTYPE — Email Domain Capability Intelligence open source?

Yes — written in JavaScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.