{
  "slug": "io-github-sendmux-sendmux-mcp",
  "name": "io.github.Sendmux/sendmux-mcp",
  "title": "Email Inbox API + Sending by Sendmux",
  "description": "AI email inbox and sending tools with attachments, search, live events, and webhooks.",
  "version": "2.2.0",
  "publishedAt": "2026-10-02T04:31:42.633901Z",
  "updatedAt": "2026-10-02T04:31:42.633901Z",
  "repoUrl": "https://github.com/Sendmux/sendmux-sdk",
  "websiteUrl": "https://sendmux.ai/docs/guides/mcp",
  "namespace": {
    "type": "github",
    "owner": "Sendmux"
  },
  "kind": "both",
  "packages": [
    {
      "registryType": "npm",
      "identifier": "sendmux-mcp",
      "version": "1.0.0",
      "transport": "stdio",
      "runtimeHint": null
    },
    {
      "registryType": "pypi",
      "identifier": "sendmux-mcp",
      "version": "2.2.0",
      "transport": "stdio",
      "runtimeHint": null
    }
  ],
  "remotes": [
    {
      "type": "streamable-http",
      "url": "https://mcp.sendmux.ai/mcp"
    }
  ],
  "envVars": [
    {
      "name": "SENDMUX_MCP_SURFACES",
      "isSecret": false,
      "isRequired": true,
      "description": "Tool surfaces to run locally."
    },
    {
      "name": "SENDMUX_MAILBOX_API_KEY",
      "isSecret": true,
      "isRequired": true,
      "description": "Mailbox API key for Mailbox API and Sending API tools."
    },
    {
      "name": "SENDMUX_MANAGEMENT_API_KEY",
      "isSecret": true,
      "isRequired": true,
      "description": "Root API key for Management API tools."
    },
    {
      "name": "SENDMUX_SENDING_API_KEY",
      "isSecret": true,
      "isRequired": false,
      "description": "Optional send-capable smx_mbx_ key or owner-approved smx_agent_ token for Sending API tools when it differs from the Mailbox API key."
    }
  ],
  "category": "communication",
  "subcategory": "email",
  "company": "",
  "categoryAuto": true,
  "checks": [
    {
      "id": "source-linked",
      "label": "Source repository linked",
      "result": "pass",
      "detail": "https://github.com/Sendmux/sendmux-sdk"
    },
    {
      "id": "version-pinned",
      "label": "Version pinned",
      "result": "pass",
      "detail": "Every package has an explicit version"
    },
    {
      "id": "https-remote",
      "label": "Remote uses HTTPS",
      "result": "pass",
      "detail": "All remote endpoints use https://"
    },
    {
      "id": "secrets-requested",
      "label": "Secrets requested",
      "result": "warn",
      "detail": "Asks for 3 secrets: SENDMUX_MAILBOX_API_KEY, SENDMUX_MANAGEMENT_API_KEY, SENDMUX_SENDING_API_KEY"
    },
    {
      "id": "known-registry",
      "label": "Known package registry",
      "result": "pass",
      "detail": "All packages come from npm, PyPI, OCI, NuGet or MCPB"
    },
    {
      "id": "namespace",
      "label": "Namespace ownership",
      "result": "info",
      "detail": "Name verified via GitHub account Sendmux"
    },
    {
      "id": "meta-text",
      "label": "Registry text aimed at the AI",
      "result": "pass",
      "detail": "Description and settings contain no hidden characters or instructions to the AI"
    },
    {
      "id": "install-scripts",
      "label": "Install scripts",
      "result": "pass",
      "detail": "sendmux-mcp@1.0.0 runs nothing at install"
    },
    {
      "id": "code-flags",
      "label": "Code red flags",
      "result": "pass",
      "detail": "Read 3 files in sendmux-mcp@1.0.0: no obfuscation, encoded execution, credential reads or data-collection endpoints found"
    },
    {
      "id": "ai-text",
      "label": "Text aimed at the AI",
      "result": "pass",
      "detail": "No hidden characters or instructions to the AI in 3 files, including comments and the README"
    }
  ],
  "scannedAt": "2026-10-29",
  "level": "Scanned",
  "install": [
    {
      "label": "Claude Desktop (npm)",
      "kind": "claude_desktop_json",
      "text": "{\n  \"mcpServers\": {\n    \"sendmux-mcp\": {\n      \"command\": \"npx\",\n      \"args\": [\n        \"-y\",\n        \"sendmux-mcp@1.0.0\"\n      ],\n      \"env\": {\n        \"SENDMUX_MCP_SURFACES\": \"<your value>\",\n        \"SENDMUX_MAILBOX_API_KEY\": \"<your value>\",\n        \"SENDMUX_MANAGEMENT_API_KEY\": \"<your value>\"\n      }\n    }\n  }\n}"
    },
    {
      "label": "Claude Desktop (pypi)",
      "kind": "claude_desktop_json",
      "text": "{\n  \"mcpServers\": {\n    \"sendmux-mcp\": {\n      \"command\": \"uvx\",\n      \"args\": [\n        \"sendmux-mcp==2.2.0\"\n      ],\n      \"env\": {\n        \"SENDMUX_MCP_SURFACES\": \"<your value>\",\n        \"SENDMUX_MAILBOX_API_KEY\": \"<your value>\",\n        \"SENDMUX_MANAGEMENT_API_KEY\": \"<your value>\"\n      }\n    }\n  }\n}"
    },
    {
      "label": "Claude Code (streamable-http)",
      "kind": "claude_code_cli",
      "text": "claude mcp add --transport http sendmux-mcp https://mcp.sendmux.ai/mcp"
    }
  ],
  "curated": true,
  "stars": 62,
  "archived": false,
  "pushedAt": "2026-10-24T05:45:44Z",
  "health": {
    "score": 71,
    "parts": {
      "popularity": 0.41101056285204307,
      "activity": 1,
      "issues": 0.9090909090909091,
      "security": 0.8
    },
    "fail": 0,
    "warn": 1,
    "raw": {
      "stars": 62,
      "forks": 1,
      "downloads": 137,
      "hn": {
        "n": 0,
        "pts": 0,
        "t": []
      },
      "issuesOpen": 1,
      "issuesClosed": 10,
      "prsMerged": 295,
      "commits90": 572,
      "release": "2026-10-02T04:23:59Z",
      "pushed": "2026-10-24T05:45:44Z",
      "growth": null,
      "growthDays": null,
      "archived": false
    },
    "at": "2026-10-31T07:35:52.424Z"
  }
}