shipmail

shipmail is a plugin for Claude Code from shipmail-to/shipmail-mcp. Its manifest loads nothing; the 1 skill it bundles cost 108 tokens per session together, scanned A, original, MIT.

An email and calendar assistant for custom-domain inboxes, such as mailboxes using your company’s website address. It can sort inboxes, draft replies, send approved messages, and manage calendars.

In plain words
What is it for?
It is for triaging work email, drafting and sending approved responses, and managing calendar entries.
Why use it?
It reduces the manual work of reviewing business email, preparing replies, and handling calendar tasks while keeping sending approval-based.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit It is for triaging work email, drafting and sending approved responses, and managing calendar entries.

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Install in Claude Code
/plugin marketplace add shipmail-to/shipmail-mcp
/plugin install shipmail
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/shipmail-to/shipmail-mcp

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for shipmail

README.md
[![agentmods](https://agentmods.dev/badge/plugins/shipmail-to/shipmail-mcp/shipmail/github.svg)](https://agentmods.dev/plugins/shipmail-to/shipmail-mcp/shipmail)
Your own site
<a href="https://agentmods.dev/plugins/shipmail-to/shipmail-mcp/shipmail"><img src="https://agentmods.dev/badge/plugins/shipmail-to/shipmail-mcp/shipmail/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for shipmail

Your own site · 80×15
<a href="https://agentmods.dev/plugins/shipmail-to/shipmail-mcp/shipmail"><img src="https://agentmods.dev/badge/plugins/shipmail-to/shipmail-mcp/shipmail.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 1 skill cost 108 tokens a session between them.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

shipmail scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

distribution/shipmail/.claude-plugin/plugin.json · 30 lines

What it actually says

{
  "displayName": "Shipmail",
  "name": "shipmail",
  "version": "0.9.6",
  "description": "Modern email for your business. Inboxes, calendars, newsletters, bookings and an AI assistant, plus transactional email and an API for your agents. Everything on your own domain, in one subscription.",
  "author": {
    "name": "Shipmail",
    "email": "[email protected]",
    "url": "https://shipmail.to"
  },
  "homepage": "https://shipmail.to/docs/mcp",
  "privacyPolicyUrl": "https://shipmail.to/privacy",
  "supportUrl": "https://shipmail.to/support",
  "documentationUrl": "https://shipmail.to/docs/mcp",
  "termsOfServiceUrl": "https://shipmail.to/terms",
  "icon": "./assets/shipmail-mark.svg",
  "repository": "https://github.com/shipmail-to/shipmail-mcp",
  "license": "MIT",
  "keywords": [
    "email",
    "business-email",
    "custom-domain",
    "agent-inbox",
    "calendar",
    "mcp"
  ],
  "skills": "./skills/",
  "mcpServers": "./.mcp.json"
}
Contents

What it installs

The manifest is a name and a version. 1 skill travel with it, and installing the plugin installs all of them — 108 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday Changed b7f257c45e83
  2. 5d ago Changed cf14ba2cc568
  3. 8d ago Changed 4df61a9b51fe
  4. 9d ago Changed 2d982370afb4
  5. 13d ago Changed 14a1a427c9cb
  6. 19d ago Changed edfd5e937d5a
  7. 20d ago First seen · 30 lines scan A 9d27687079ab

Subscribe to this mod's changes

shipmail is a plugin published in the GitHub repository shipmail-to/shipmail-mcp (1 stars, last pushed 2d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-26.