Ringmaster

What it does

Ringmaster is proprietary lifecycle email automation by ZNZ Systems. Your app sends events through a REST API. Your AI agent designs flows, segments and campaigns over MCP, while Ringmaster handles email delivery.

How it works

Send one REST call per event with an Idempotency-Key. Each event creates or updates the person it is about. Connect an MCP client such as Claude, ChatGPT, Claude Code or Cursor to design flows in plain language. Ringmaster validates merge fields and sending domains before saving, and requires confirmation before sending.

Delivery safeguards

Server-side rules prevent duplicate sends, schedule messages during the recipient's daytime, skip people who already completed a goal, and respect consent, unsubscribes and suppressions.

Pricing

USD 300 per month, billed monthly. Includes unlimited flows, campaigns and segments, an MCP server and 10,000 emails per month, with more on request. Cancel any time. Tax may apply.

Learn more

Visit https://rngmstr.dev/ for product details and API documentation.

Built With

• rest-api