added gmail mcp server

[shreyannandanwar]

Add Gmail AutoAuth MCP Server to MCP Registry

This PR registers the Gmail AutoAuth MCP server to the MCP Registry, enabling integration of Gmail-based workflows through OAuth2 authentication and secure message access.

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📌 About Gmail AutoAuth MCP

The Gmail MCP server provides an MCP interface to Google Mail, allowing AI agents to:

• Programmatically access inbox messages
• Use OAuth2 for secure authentication
• Automate parsing, summarization, and replying to emails
• Enable persistent email access using refresh tokens

This is particularly useful for assistants and communication-focused AI agents.

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✅ Included in This PR

• New server definition: servers/gmail/server.yaml
• Category: productivity
• Docker image: mcp/gmail (must be built locally before use)

To start this server:

task start gmail

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🛠 Build Instructions (before using)

First, Use the Gmail MCP Docker image:

task build -- gmail   

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🔐 Secrets Required

The following secrets must be provided at runtime:

secrets:
  - name: gmail.client_id
    env: GMAIL_CLIENT_ID
  - name: gmail.client_secret
    env: GMAIL_CLIENT_SECRET
  - name: gmail.refresh_token
    env: GMAIL_REFRESH_TOKEN

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📎 Additional Info

Gmail MCP GitHub Repo: https://github.com/shreyannandanwar/Gmail-MCP-Server

This MCP runs fully local using a developer-built Docker image, allowing for secure Gmail integration without relying on Docker Hub.

Let me know if any updates or changes are needed!