Gmail Postmaster Tools MCP Server

An MCP server for the Gmail Postmaster Tools API (v2) - query your domains, sender compliance status, and Gmail traffic metrics from Claude, Cursor, or any MCP client.

People who need email tools inside Claude, Cursor, VS Code, or another MCP client. The project is written in JavaScript.

VERIFIED ACTIVE

LAST COMMIT 2026-07-22 · ★ 6 · #69 OF 75 MAINTAINED EMAIL · VERIFIED 2026-08-25

MIT · JavaScript servers · how we verify → /methodology

01 · Install Gmail Postmaster Tools

before you install - you'll need

Set GPT_CLIENT_ID, GPT_CLIENT_SECRET before connecting.

Claude Desktop

Settings → Extensions → Install, then select the https://github.com/optipub/gmail-postmaster-tools-mcp/releases/download/v1.0.1/gmail-postmaster-tools.mcpb .mcpb bundle

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as Claude Desktop extension (.mcpb bundle)

license MIT - declared in the repository

registry namespace io.github.optipub is GitHub-verified and matches the repo owner

03 · What Gmail Postmaster Tools can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v1.0.1 · 2026-07-22

v1.0.0 · 2026-06-14

04 · Who maintains Gmail Postmaster Tools

Gmail Postmaster Tools is maintained by optipub. We track 2 MCP servers from optipub - 2 actively maintained, 11 combined GitHub stars, oldest repo from Jun 2026. Full record: all servers from optipub.

  1. Outlook SNDS Outlook.com SNDS IP Data and IP Status reports via the OAuth-secured REST API. ★ 5

05 · Facts

repository
github.com/optipub/gmail-postmaster-tools-mcp
category
email - ranked #69 of 75 actively-maintained email servers as of 2026-08-25.
release cadence
2 releases in the last 90 days (latest 2026-07-22)
registry
io.github.optipub/gmail-postmaster-tools (active, first published 2026-06-14 · 2 versions)
packages
mcpb:https://github.com/optipub/gmail-postmaster-tools-mcp/releases/download/v1.0.1/gmail-postmaster-tools.mcpb

06 · Gmail Postmaster Tools FAQ

What is Gmail Postmaster Tools?

An MCP server for the Gmail Postmaster Tools API (v2) - query your domains, sender compliance status, and Gmail traffic metrics from Claude, Cursor, or any MCP client.

Is Gmail Postmaster Tools still maintained?

Yes - as of 2026-08-25, its last commit was 2026-07-22 and it shipped 2 releases in the last 90 days. We re-verify nightly.

07 · Alternatives to Gmail Postmaster Tools

Alternatives to Gmail Postmaster Tools

Maintained email servers if Gmail Postmaster Tools isn't the fit.

  1. Emailmd Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails. ★ 1,303 · 2026-08-15
  2. Sessy - Amazon SES observability Read-only Amazon SES observability: search events, inspect bounces, pull delivery stats. ★ 914 · 2026-08-18
  3. Mu News, web search, mail, markets, weather, places, files, calendar, contacts. 67 tools, one endpoint. ★ 387 · 2026-08-24
  4. Hqbase Connect AI agents to your self-hosted HQBase shared email workspace. ★ 295 · 2026-08-25
  5. SendGrid MCP server for SendGrid - global transactional + marketing email (Twilio-owned) ★ 269 · 2026-08-12
  6. Atomic Mail Programmable email inbox for AI agents - JMAP, PoW auth, stdio MCP server. ★ 266 · 2026-08-11

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