Email Inbox API + Sending by Sendmux

{
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "name": "io.github.Sendmux/sendmux-mcp",
  "description": "AI email inbox and sending tools with attachments, search, live events, and webhooks.",
  "title": "Email Inbox API + Sending by Sendmux",
  "repository": {
    "url": "https://github.com/Sendmux/sendmux-sdk",
    "source": "github",
    "id": "1253958043",
    "subfolder": "packages/python/mcp"
  },
  "version": "2.2.0",
  "websiteUrl": "https://sendmux.ai/docs/guides/mcp",
  "packages": [
    {
      "registryType": "npm",
      "identifier": "sendmux-mcp",
      "version": "1.0.0",
      "transport": {
        "type": "stdio"
      }
    },
    {
      "registryType": "pypi",
      "identifier": "sendmux-mcp",
      "version": "2.2.0",
      "transport": {
        "type": "stdio"
      },
      "environmentVariables": [
        {
          "description": "Tool surfaces to run locally.",
          "isRequired": true,
          "format": "string",
          "value": "mailbox,management,sending",
          "name": "SENDMUX_MCP_SURFACES"
        },
        {
          "description": "Mailbox API key for Mailbox API and Sending API tools.",
          "isRequired": true,
          "format": "string",
          "isSecret": true,
          "placeholder": "smx_mbx_...",
          "name": "SENDMUX_MAILBOX_API_KEY"
        },
        {
          "description": "Root API key for Management API tools.",
          "isRequired": true,
          "format": "string",
          "isSecret": true,
          "placeholder": "smx_root_...",
          "name": "SENDMUX_MANAGEMENT_API_KEY"
        },
        {
          "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.",
          "format": "string",
          "isSecret": true,
          "placeholder": "smx_mbx_...",
          "name": "SENDMUX_SENDING_API_KEY"
        }
      ]
    }
  ],
  "remotes": [
    {
      "type": "streamable-http",
      "url": "https://mcp.sendmux.ai/mcp"
    }
  ]
}