Mektup MCP Server

by weeci Your server? Claim it

answering

Mektup is answering right now. Last checked 7 min ago. Last commit 21 Aug 2026.

Fully-managed email as MCP tools - register domains, real mailboxes, send and receive mail.

Uptime history 34 days of history

34 days agonow

100.0%

Uptime 24h

91 of 91 checks

—

Tools

hidden behind auth

36 ms

Response time

average over 24h

Stars

last commit 21 Aug 2026

Nothing serious here today

Today is the operative word: we check Mektup 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 7 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add mektup-mcp --transport http https://mcp.usemektup.com/mcp

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

{
  "mcpServers": {
    "mektup-mcp": {
      "url": "https://mcp.usemektup.com/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.mektup-mcp]
url = "https://mcp.usemektup.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "mektup-mcp": {
      "url": "https://mcp.usemektup.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "mektup-mcp": {
      "url": "https://mcp.usemektup.com/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.usemektup.com/mcp	streamable-http	sign-in	46 ms	7 min ago

Alternatives to Mektup

same job, measured the same way

AgentMail

by agentmail

Email inboxes for AI agents: send, receive, reply, search, and manage threaded email over MCP.

answering

fixture.email — Email Testing for Agents

by fixture

Disposable test mailboxes on a real domain: send, receive and assert on real email.

answering

Email Agent

by mailkite

Email for AI agents — send, receive as a webhook, manage domains, templates, routing.

answering

OSIR Domain Registrar

AI agents read & send email, manage mailboxes, domains and webhooks via the QMailing API.

67 installs/wk answering

Mail Receive

by mailkite

Receive inbound email as clean JSON — manage domains, routes, and webhooks. MailKite.

answering

MCP Server Imap

by aiwerk

Email tools for any IMAP/SMTP provider: list, read, search, send, and manage messages.

152 installs/wk local only

Mailersend

by mcparmory

Send transactional emails, manage domains, and track delivery analytics

236 installs/wk local only

Mektup — questions

Answers built from our own checks of this server.

Why is there no tool list for Mektup?

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 Mektup 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 36 ms. The bar chart above shows every period we have measured.

How do I connect Mektup?

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 sign in through your browser once and the client keeps the session: no key to copy, and it refuses anonymous clients.

How do you sign in to Mektup?

No API key is involved. Mektup answers our knock with an OAuth challenge, so you authorise it once in your browser and the client keeps the session. That is also why we see no tool list: it will not describe itself to an anonymous client, and that is the server working as intended, not a fault.

How fast is Mektup?

It answers our handshake in 36 ms on average, which is faster than 99% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Mektup open source?

Yes — it is published under the MIT licence, 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.