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mailsocket MCP Server

by mailsocket Your server? Claim it
answering

mailsocket is answering right now. Last checked moments ago. 294 installs a week from pypi. Last commit 20 Oct 2026.

Email inboxes for AI agents: create an inbox, then block until the OTP or magic link arrives.

Installs per day peak 819 · avg 129 · -53% w/w
a month agotoday
Uptime history 26 days of history · worst day 99%
26 days agonow
100.0%
Uptime 24h
92 of 92 checks
—
Tools
hidden behind auth
332 ms
Response time
average over 24h
294
Installs / week
npm and PyPI

What the code does

We read the source, 5 d ago · rules 995398eba69f

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

        env = dict(os.environ if environ is None else environ)
In the project's build, not in the package

Found in continuous integration, deployment or infrastructure files, or in a neighbouring package of the same monorepo. None of this is installed when you add the server: it describes how the project is built and released. We list it because a leaked key in a build pipeline is still a real problem, but it is not something this server does on your machine.

Secret passed into the image build Dockerfile:3
ENV MAILSOCKET_API_KEY=ms_live_placeholder_for_introspection

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 0 min ago.

run in your terminal
claude mcp add mailsocket-mcp --transport http https://mcp.mailsocket.app/mcp
Settings → Connectors → Add custom connector, then paste this address
https://mcp.mailsocket.app/mcp
~/.codex/config.toml
[mcp_servers.mailsocket-mcp]
url = "https://mcp.mailsocket.app/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "mailsocket-mcp": {
      "url": "https://mcp.mailsocket.app/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "mailsocket-mcp": {
      "type": "http",
      "url": "https://mcp.mailsocket.app/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, but you need an API key from its owner to call it.

Endpoints

URLTransportStateLatencyChecked
https://mcp.mailsocket.app/mcp streamable-http needs key 229 ms 0 min ago

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same job, measured the same way
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mailsocket — questions

Answers built from our own checks of this server.

Why is there no tool list for mailsocket?
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 mailsocket working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 332 ms. The bar chart above shows every period we have measured.
How do I connect mailsocket?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form 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: it refuses anonymous clients.
Does mailsocket need an API key?
Yes. Every time we knock, mailsocket 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 mailsocket?
It answers our handshake in 332 ms on average, which is faster than 49% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
How many people use mailsocket?
The pypi package mailsocket-mcp was installed 294 times in the last week. Week over week that is -53%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is mailsocket open source?
The code is open source: it is published under the MIT licence, written in Python and 0 stars on GitHub. The licence covers the code in the repository, not the hosted service at mcp.mailsocket.app, which runs on its operator's own terms.