Koskamo

Gmail Postmaster Tools MCP

An MCP server for the Gmail Postmaster Tools API (v2) that allows agents to query registered domains, sender compliance status (SPF, DKIM, DMARC), and Gmail traffic metrics. It is a bring-your-own-credentials tool where users supply their own Google OAuth client, running locally with zero dependencies.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Gmail Postmaster Tools MCP logo, by OptiPubCommunity listingLocal stdioSource reviewed; not executedPublished by OptiPub
You need:You need a Google Cloud OAuth client because Google doesn't offer a shared public one for this API.
Vendor documentation

What you can do with it

  • List registered domains and their verification state
  • Check sender compliance status including SPF, DKIM, and DMARC
  • Query domain stats for spam rate and delivery errors

Source and maintenance

Community listingRegistry 1.0.1
Maintenance checked

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

https://github.com/optipub/gmail-postmaster-tools-mcp/releases/download/v1.0.1/gmail-postmaster-tools.mcpb

mcpbSHA-256 supplied
https://github.com/optipub/gmail-postmaster-tools-mcp/releases/download/v1.0.1/gmail-postmaster-tools.mcpb package definition
{
  "transport": "stdio",
  "fileSha256": "28c5ccd20bc92f9a1c8cc8d0d08703eb559b8dcfc7b4ca40977f87bfa9c94198",
  "identifier": "https://github.com/optipub/gmail-postmaster-tools-mcp/releases/download/v1.0.1/gmail-postmaster-tools.mcpb",
  "registryType": "mcpb"
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

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