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mcp/harbor
Grok

receivemail.dev for Grok

dev.receivemail/receivemail

Disposable email inboxes for agents and tests: create an address, wait for the email. No signup.

client:Grok transport:streamable-http tools:3

Install receivemail.dev in Grok

.mcp.json (in your project root) 

{
  "mcpServers": {
    "receivemail": {
      "type": "http",
      "url": "https://receivemail.dev/mcp"
    }
  }
}

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

What Grok can do once it is connected

receivemail.dev in other clients

receivemail.dev MCP server