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mcp/harbor
Grok

MailPace for Grok

com.mailpace/mailpace-mcp

Send transactional email and manage MailPace domains from MCP clients.

client:Grok transport:stdio runtime:npm

Install MailPace in Grok

.mcp.json (in your project root)

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "mailpace-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@mailpace/mcp"
      ],
      "env": {
        "MAILPACE_API_TOKEN": "<MAILPACE_API_TOKEN>",
        "MAILPACE_ORGANIZATION_TOKEN": "<MAILPACE_ORGANIZATION_TOKEN>",
        "MAILPACE_ALLOWED_RECIPIENTS": "<MAILPACE_ALLOWED_RECIPIENTS>",
        "MAILPACE_REQUEST_TIMEOUT_MS": "<MAILPACE_REQUEST_TIMEOUT_MS>",
        "MAILPACE_MAX_RETRIES": "<MAILPACE_MAX_RETRIES>"
      }
    }
  }
}

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

MailPace in other clients

MailPace MCP server