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mcp/harbor
Grok

test mailbox for Grok

io.github.therealmrfunguy/test-mailbox

Disposable email inboxes for testing — create addresses, wait for messages, extract links.

client:Grok transport:sse

Install test mailbox in Grok

.mcp.json (in your project root) 

{
  "mcpServers": {
    "test-mailbox": {
      "type": "sse",
      "url": "https://mail.rjctdlabs.xyz/sse"
    }
  }
}

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

test mailbox in other clients

test mailbox MCP server