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mailsocket MCP server

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by mailsocket.app·app.mailsocket/mailsocket-mcp·v0.3.0
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Email inboxes for AI agents: create an inbox, then block until the OTP or magic link arrives.

A92/100grade A
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A92/100

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Adoption
Growing

0 stars521 downloads/wk

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mailsocket tools

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Not scanned yet. New registry listings are scanned within a day of import.

Install mailsocket in Claude Code, Cursor or VS Code

claude mcp add --transport http mailsocket-mcp https://mcp.mailsocket.app/mcp
Add to Cursor

What the publisher says

From the mailsocket repository's README, as published. We do not edit it. Read it on GitHub

mailsocket SDKs & MCP server

mailsocket is an inbox API for OTP and magic-link signup automation: email in, JSON out. GET /inboxes/{id}/messages/wait?require=otp blocks and returns the OTP the instant it arrives — no polling, no IMAP. Built for signup automation, E2E tests, and AI agents.

This repo holds the official client packages.

Full docs: mailsocket.app · dash.mailsocket.app/docs/

MCP config

Point any MCP-compatible client (Claude Desktop, Cursor, Claude Code) at the mailsocket-mcp server over stdio:

{
  "mcpServers": {
    "mailsocket": {
      "command": "uvx",
      "args": ["mailsocket-mcp"],
      "env": {
        "MAILSOCKET_API_KEY": "ms_live_..."
      }
    }
  }
}

See mcp/README.md for per-client config file locations and the full tool list.

Examples

examples/playwright/ — a reference Playwright test that fills a signup form with a mailsocket inbox address and blocks on the wait endpoint until the OTP arrives.

License

MIT — see LICENSE.

Nothing above is checked by us. What we check is on the safety report.

mailsocket: common questions

Is mailsocket MCP server safe?
Yes, by our scan: it is graded A (92/100). Read the mailsocket safety report
How do I install mailsocket?
It runs remotely at mcp.mailsocket.app. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does mailsocket need an API key?
Yes. The registry entry asks for MAILSOCKET_API_KEY, Authorization.
Is mailsocket maintained?
The last commit was 6 days ago (2026-10-01). The latest release is v0.3.0.
Is mailsocket up?
100% of our last 21 checks got an answer. We check remote servers about four times a day.
What can I use instead of mailsocket?
Servers from other publishers that do the same job: Inbox Zero MCP server, Atomic Mail MCP server and Email Inbox API + Sending by Sendmux MCP server. Compare all mailsocket alternatives.

Alternatives to mailsocket

Same job from other publishers: the closest match first, then the best rated.

All mailsocket alternatives →
  • Inbox Zero
    Search Gmail and Outlook, save drafts, manage email rules, and view email stats.
    A
  • Atomic Mail
    Programmable email inbox for AI agents — JMAP, PoW auth, stdio MCP server.
    A
  • Email Inbox API + Sending by Sendmux
    AI email inbox and sending tools with attachments, search, live events, and webhooks.
    A
  • e2a — email for AI agents
    Authenticated email gateway for AI agents — per-agent inboxes, HITL approval, SPF/DKIM verified.
    A
  • Agenticmail
    Real email and SMS for AI agents — send mail, receive verification codes, drive a real inbox.
    B

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