io.github.heocoi/mailsink

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

Connect this server

Add this to your MCP client config — claude_desktop_config.json (Claude Desktop) or .cursor/mcp.json (Cursor).Suits: Claude Desktop · Cursor.

{
  "mcpServers": {
    "mailsink": {
      "command": "npx",
      "args": [
        "-y",
        "@mailsink/mcp@0.1.5"
      ],
      "env": {
        "MAILSINK_API_KEY": "<your MAILSINK_API_KEY>"
      }
    }
  }
}

Environment variables

MAILSINK_API_KEYrequiredsecretYour MailSink API key. Get it at https://mailsink.dev/auth/github

A starting point — check the repository for exact arguments and setup. Restart your client after editing the config.

Category: Developer Tools
Version: 0.1.5
Registry: active
Published: 8/21/2026

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Add the badge to your site

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HTML — for your website

<a href="https://serverdex.io/server/io-github-heocoi-mailsink?utm_source=badge"><img src="https://serverdex.io/brand/badge.svg" alt="io.github.heocoi/mailsink — listed on Serverdex" width="123" height="40" loading="lazy"></a>

Recommended. A dofollow link from your own domain is the one that counts for search engines, and it's the link we check for a free listing.

Markdown — for your README

[![io.github.heocoi/mailsink — listed on Serverdex](https://serverdex.io/brand/badge.svg)](https://serverdex.io/server/io-github-heocoi-mailsink?utm_source=badge)

Nice for visibility, but GitHub marks README links nofollow, so it doesn't pass authority. Use the HTML badge on your site as well.