Gmail Sender MCP Server

The Gmail Sender MCP Server bridges the gap between AI assistants and real‑world email communication. By exposing a lightweight set of tools that wrap the Gmail API, it allows Claude and other Model Context Protocol (MCP) clients to compose and send messages directly from conversational flows. This eliminates the need for developers to build custom email integrations or manage OAuth flows within each application, enabling rapid prototyping and production‑grade automation.

At its core, the server offers two straightforward tools: and . The former lets an assistant draft a new message by specifying the recipient, subject, and body—HTML formatting is supported for richer content. The latter attaches a reply to an existing thread by referencing the original email’s ID, preserving conversation context. Both tools rely on a pre‑configured Gmail OAuth credential set (client ID/secret and refresh token), so the server can act on behalf of a dedicated account without exposing sensitive tokens to the assistant itself.

For developers, this MCP simplifies workflows that require outbound email. Common use cases include automated support ticket creation, status updates from monitoring systems, or personalized newsletters triggered by AI‑generated content. By integrating the server into a larger MCP ecosystem, a single assistant can orchestrate complex sequences—query data, generate insights, and then email the results—all within a single conversational context. The server’s minimal dependencies and optional Docker support make it easy to deploy behind firewalls or in cloud environments, ensuring that email capabilities remain available even when network conditions change.

Unique advantages of this implementation include its focused scope—only email sending is exposed, reducing surface area for errors—and the built‑in handling of OAuth token refreshes. Developers can point a new MCP client at the server’s endpoint and immediately gain secure, authenticated email access without writing any authentication code. The clear separation of concerns (MCP server vs. assistant logic) also facilitates testing and continuous delivery pipelines, as the email component can be swapped out or upgraded independently of the conversational model.

In summary, the Gmail Sender MCP Server turns a standard Gmail account into an AI‑driven messaging hub. It delivers reliable, authenticated email capabilities with minimal setup, enabling developers to enrich their assistants’ interactions and automate communication tasks across a wide range of real‑world scenarios.