@pipeworx/postmark

Postmark MCP — transactional email send + lookups. Free trial 100/mo, free forever for non-marketing testing.

Part of Pipeworx — an MCP gateway connecting AI agents to 1394+ live data sources.

Auth

• Platform: PLATFORM_POSTMARK_KEY (server token). BYO: ?_apiKey=….

Related MCP server: Postmark MCP Server

Tools

• send(from, to, subject?, htmlbody?, textbody?, tag?, replyto?, cc?, bcc?, headers?, trackopens?, trackLinks?, messagestream?) — send a single email

• send_batch(emails) — send up to 500 emails

• delivery_stats() — server-level delivery stats

• messages_outbound(count?, offset?, recipient?, fromEmail?, tag?, status?, fromDate?, toDate?, subject?, mailboxHash?, metadata_*?) — outbound history

• message_outbound_detail(messageId) — single outbound detail

• message_outbound_dump(messageId) — raw MIME dump

• bounces(count?, offset?, type?, inactive?, emailFilter?, tag?, messageID?, fromDate?, toDate?) — bounces

• bounce(id) — single bounce

• bounce_activate(id) — re-activate a bounced address

• server() — current server info

Data source

https://api.postmarkapp.com

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

{
  "mcpServers": {
    "postmark": {
      "url": "https://gateway.pipeworx.io/postmark/mcp"
    }
  }
}

Or connect to the full Pipeworx gateway for access to all 1394+ data sources:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://gateway.pipeworx.io/mcp"
    }
  }
}

Using with ask_pipeworx

Instead of calling tools directly, you can ask questions in plain English:

ask_pipeworx({ question: "your question about Postmark data" })

The gateway picks the right tool and fills the arguments automatically.

More

• Docs and guides

• pipeworx.io

License

MIT