Couryo for ChatGPT

com.couryo/mcp

Transactional email API: send, read delivery timelines, explain bounces, manage domains (OAuth).

client:ChatGPT transport:streamable-http

Install Couryo in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.couryo.com

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs