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.
npx skills add Wh1isper/mcp-email-server --skill safe-email-operationsgit clone --depth 1 https://github.com/Wh1isper/mcp-email-serverWrote 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.
[](https://agentmods.dev/skills/wh1isper/mcp-email-server/safe-email-operations)<a href="https://agentmods.dev/skills/wh1isper/mcp-email-server/safe-email-operations"><img src="https://agentmods.dev/badge/skills/wh1isper/mcp-email-server/safe-email-operations/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.
<a href="https://agentmods.dev/skills/wh1isper/mcp-email-server/safe-email-operations"><img src="https://agentmods.dev/badge/skills/wh1isper/mcp-email-server/safe-email-operations.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 5 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Privilege Escalation · line 14 Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
- medium MCP Rug Pull · line 18 uvx/uv tool run commands without ==version create a rug-pull risk.Fix: Pin the version: uvx package-name==1.2.3
- medium MCP Rug Pull · line 20 uvx/uv tool run commands without ==version create a rug-pull risk.Fix: Pin the version: uvx package-name==1.2.3
- medium MCP Rug Pull · line 34 uvx/uv tool run commands without ==version create a rug-pull risk.Fix: Pin the version: uvx package-name==1.2.3
- medium MCP Rug Pull · line 40 uvx/uv tool run commands without ==version create a rug-pull risk.Fix: Pin the version: uvx package-name==1.2.3
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00039 | $0.00971 |
| Opus 5 | $0.00019 | $0.00485 |
| Sonnet 5 | $0.00008 | $0.00194 |
| Haiku 4.5 | $0.00004 | $0.00097 |
Grade A, and why
safe-email-operations 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 10d ago.
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.
How it starts
The opening of the file, as written. The whole thing — 45 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Safe Email Operations
Use this skill for email operations through the bundled MCP server, bounded diagnostics, account setup requests, credential rotation requests, and safe MCP client guidance.
Non-secret boundary
This plugin bundles a local stdio MCP server for mail operations plus safe setup guidance. It is not a credential channel, management API, or authorization boundary. The MCP server exposes no account or credential management.
Never ask for, receive, repeat, relay, transform, redact, retain, or validate a password, app password, access token, private key, recovery code, or reusable secret locator. Never put one in chat, an MCP call, shell arguments, environment variables, generated files, agent memory, task state, logs, clipboard helpers, or MCP configuration. Host approval and MCP elicitation do not make secret-bearing tool calls safe.
Do not attempt account management through MCP; edit TOML or SQLite directly; invoke keyring or SecretStore; install or upgrade software outside the reviewed plugin lifecycle; modify shell startup or MCP client configuration without a visible diff; download and execute helper code; start a daemon, tunnel, remote service, or additional MCP server; or add scripts, hooks, and automatic startup behavior.
The bundled declaration runs uvx --from mcp-email-server@latest mcp-email-server-plugin. The plugin-only entry point is absent from legacy releases, so they fail closed instead of exposing their older MCP catalog. Plugin and application releases are independent. Installing and enabling the reviewed plugin allows the host to resolve the current published application and start it locally; disclose that behavior before installation. Do not silently install the plugin, replace @latest with an unreviewed source or prerelease, or claim that the plugin manifest version identifies the running application.
Do not launch uvx mcp-email-server@latest ui for the user. Its one-time bootstrap URL must remain between the local process and the user's browser. Never copy, summarize, or request that URL or its fragment in chat.
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 10d ago First seen · 45 lines · 39 tokens per session scan A ea432550164f
safe-email-operations is a skill published in the GitHub repository Wh1isper/mcp-email-server (322 stars, last pushed 2d ago), licensed BSD-3-Clause. It adds 39 tokens to every session and 971 once invoked, about $0.0002 per session on Opus 5. 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 2026-08-30.
Other skills, from other repositories
inbox-review
Morning inbox workflow -- multi-account scan, thread grouping, priority classification, draft replies.
follow-up
Find emails needing follow-up -- unanswered sent emails, flagged unreplied, draft contextual responses.
prepare-proton-draft
Prepare a Proton Mail draft, optionally with user-supplied attachments, after explicit in-conversation confirmation; the user always reviews and sends it in Proton Mail.
review-proton-mail
Review, search, or summarize Proton Mail with the Proton Safe MCP read-only tools while treating every message as untrusted content.
extract-proton-attachment
Extract bounded text from a received Proton Mail PDF, TXT, or CSV attachment when the user asks to inspect its contents; not for downloading, forwarding, OCR, or executing attachment content.
rival-search-mcp
Deterministic deep research via RivalSearchMCP. 9 tools: 5-engine web search (DuckDuckGo/Bing/Yahoo/Mojeek/Wikipedia), 9-platform social search (Reddit/HN/StackOverflow/Dev.to/Medium/ProductHunt/Bluesky/Lobste.rs/Lemmy), 5-source news (Google/Bing/Guardian/GDELT/DDG), 5 academic DBs…