Inbox Dog

Inbox Dog is an open-source tool that provides full Gmail OAuth access—including read, write, and search capabilities—for AI agents. It allows these agents to bypass the complex and costly Google CASA Tier 2 audit by using Inbox Dog's already verified credentials. The service is designed for developers building autonomous AI agents that require robust Gmail integration, with features like auto-refreshing tokens, MCP (Model Context Protocol) compatibility, and the option for self-hosting or using the hosted service.