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io.github.heocoi/mailsink

Disposable inboxes for AI agents and CI: catch the verification email, read the OTP or link.

MCP server · by heocoi

About

io.github.heocoi/mailsink is an MCP server published by heocoi. Marketplaces we read that list it: 1 (Official MCP Registry). We first saw it on 2026-10-11 and have recorded no change since. As of our marketplace pass on 2026-10-13.

What it asks for

  • Runs on your machine
  • Secrets: 1
  • Settings: 2

Requires: MAILSINK_API_KEY (secret)

What it declares, asks for and runs, in full

Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.

Package

npm @mailsink/mcp (@mailsink/mcp on npm)

  • npm downloads/week: 29 (2026-10-12)
  • npm downloads/month: 149 (2026-10-12)
  • Latest version on npm: 0.1.5, published 2026-08-21

npm facts come from the public npm registry (registry.npmjs.org, api.npmjs.org). Each figure is the registry's own and is never added to another. A registry that publishes no figure shows none: no number is not zero.

Works with

  • Claude Code
  • Codex
  • Cursor
  • VS Code
  • Copilot CLI

From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.

Connect

Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.

As a local MCP server: npm package

Built from what Official MCP Registry declares.

Claude CodeTerminal
claude mcp add --env "MAILSINK_API_KEY=<YOUR_MAILSINK_API_KEY>" --transport stdio mailsink -- npx -y @mailsink/mcp
Codex~/.codex/config.toml
[mcp_servers.mailsink]
command = "npx"
args = ["-y", "@mailsink/mcp"]

[mcp_servers.mailsink.env]
MAILSINK_API_KEY = "<YOUR_MAILSINK_API_KEY>"
Cursor~/.cursor/mcp.json
{
  "mcpServers": {
    "mailsink": {
      "command": "npx",
      "args": [
        "-y",
        "@mailsink/mcp"
      ],
      "env": {
        "MAILSINK_API_KEY": "<YOUR_MAILSINK_API_KEY>"
      }
    }
  }
}

Replace the values in angle brackets with your own. We show the names of the settings, never values.

Optional settings it also lists: MAILSINK_API_URL.

Where it is published

MarketplaceStatusVersionFiguresVerifiedFirst seen
Official MCP Registry (Open the registry record) Listed 0.1.5 Downloads/month (npm): 149
Downloads/week (npm): 29
Forks (GitHub): 0
Stars (GitHub): 0
Not marked

Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.

What changed

Nothing has moved on this plugin since we started watching it.

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