Ringmaster

Ringmaster is a lifecycle email API your AI agent runs over MCP. Your app sends events through REST, and your agent designs flows, segments and campaigns in plain language. Connect from Claude, ChatGPT, Claude Code, Cursor or another MCP client.

Ringmaster handles consent, unsubscribes and suppressions, avoids duplicate emails, and sends during the recipient’s daytime. The dashboard and your agent work with the same flows, settings and results.

One plan costs $300 USD per month and includes unlimited flows, campaigns and segments, plus 10,000 emails a month, with more on request. Cancel any time. Made by ZNZ Systems.