Warm Inbox for ChatGPT

org.warminbox/mcp

Email warm-up for AI builders: check deliverability, connect mailboxes, pause or tune warm-ups.

client:ChatGPT transport:streamable-http

Install Warm Inbox in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.warminbox.org/mcp

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