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 14 min ago. Last commit 13 Sep 2026.

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

Uptime history 64 days of history · worst day 97%

64 days agonow

100.0%

Uptime 24h

91 of 91 checks

—

Tools

hidden behind auth

505 ms

Response time

average over 24h

Stars

last commit 13 Sep 2026

Nothing serious here today

Today is the operative word: we check MAILTYPE — Email Domain Capability Intelligence every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 14 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 it did not say what kind of credentials it expects.

Endpoints

URL	Transport	State	Latency	Checked
https://mailtype-api.onrender.com/mcp	streamable-http	needs auth	201 ms	14 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 505 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 credentials: 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.

How fast is MAILTYPE — Email Domain Capability Intelligence?

It answers our handshake in 505 ms on average, which is faster than 22% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is MAILTYPE — Email Domain Capability Intelligence open source?

We cannot say either way: written in JavaScript and 0 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.