Headless Gmail MCP Server

The MCP Headless Gmail Server solves a common pain point for AI assistants that need to interact with Gmail without exposing or managing sensitive credentials on the server itself. By decoupling OAuth flow from the server, developers can run the MCP in any remote or containerized environment—no local browser, no filesystem access required. Clients complete the OAuth handshake independently and then pass the resulting and as context to the MCP, ensuring that credential storage remains strictly client‑side while the server focuses solely on executing Gmail API calls.

For developers building AI workflows, this separation means that a single MCP instance can serve multiple agents or services without risking credential leakage. The server exposes straightforward tools: retrieve the latest emails with a preview of the body, fetch full message content in paginated 1 kB chunks, send new messages, and refresh tokens on demand. Automatic token refreshing keeps sessions alive without manual intervention, making the server robust for long‑running conversations or batch processing tasks.

Key capabilities are delivered through a minimal API surface:

• Email retrieval – fetch recent messages and their body previews, then stream the remainder in controlled chunks to avoid large payloads.
• Email composition – send messages using the same authenticated session, supporting attachments if needed via standard Gmail API conventions.
• Token lifecycle management – a dedicated tool refreshes expired tokens, leveraging the stored without exposing it to the server.

These features enable a variety of real‑world scenarios: marketing automation bots that pull inbound leads from Gmail, customer support agents that can read and reply to tickets directly within an AI interface, or compliance tools that audit email content for policy violations—all without embedding Google credentials in the deployment. Because the server is Docker‑ready and built on a mature Python client library, it can be spun up in CI/CD pipelines, serverless functions, or edge devices with minimal overhead.

In summary, the MCP Headless Gmail Server provides a secure, headless bridge between AI assistants and Gmail. Its focused functionality, automatic token handling, and container‑friendly design make it a compelling choice for developers who need reliable email integration while maintaining strict separation of credential management.