send0

io.github.send0-dev/send0

Email inboxes for AI agents: create an address, wait for codes and links, send and reply in threads.

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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": {
    "send0": {
      "command": "npx",
      "args": [
        "-y",
        "@send0/mcp@0.2.1"
      ],
      "env": {
        "SEND0_API_KEY": "<your SEND0_API_KEY>",
        "SEND0_BASE_URL": "https://api.send0.dev"
      }
    }
  }
}
Environment variables
  • SEND0_API_KEYrequiredsecretsend0 API key (s0_live_…), from https://app.send0.dev
  • SEND0_BASE_URLAPI base URL, for a self-hosted send0

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

Category
Developer Tools
Version
0.2.1
Registry
active
Published
10/13/2026

Remotes

  • streamable-httphttps://api.send0.dev/mcp

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Add the badge to your site

Show visitors that send0 is listed here — it’s also the link we check for a free listing.

send0 — listed on Serverdex

HTML — for your website

<a href="https://serverdex.io/server/io-github-send0-dev-send0?utm_source=badge"><img src="https://serverdex.io/brand/badge.svg" alt="send0 — 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

[![send0 — listed on Serverdex](https://serverdex.io/brand/badge.svg)](https://serverdex.io/server/io-github-send0-dev-send0?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.