ClaudSkills / Growth & Marketing / growth-misc

List Hygiene Monitor

Q: What is a Claude Code skill and how does the List Hygiene Monitor skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. List Hygiene Monitor is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Growth & Marketing category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Growth & Marketing · Sub-category: growth-misc · Last updated: 2026-07-11

Use when the user asks to "watch my list health over time", "flag decaying / unengaged subscribers on a schedule", "why is my open rate drifting down / bounces creeping up", or "build me a re-permission and prune worklist"; runs the scheduled SEND list-decay + suppression-drift watch — an engagement-recency cohort read (30/90/180/365-day), hard-bounce and spam-complaint trend vs benchmark, suppression-list growth/leakage check, and a segmented re-permission / sunset / prune worklist tied to SEND S (list hygiene) and E (engagement-decay) sub-items. Not for the one-time pre-send authentication pre-flight — use deliverability-qa; not for the consent/suppression record itself — use consent-registry; not for computing the EQS or enforcing vetoes — use email-quality-auditor. 邮件列表健康度监控/退订漂移/沉睡用户清理

Security AStatic scan found no risk patternsHow grading works ›

About this skill (catalog notes)

List Hygiene Monitor includes pricing or quota commentary; at least one code block. At roughly 1,622 words the SKILL.md is on the longer end of the catalog distribution.

License: Apache-2.0
Original author: aaron-he-zhu
Indexed lastmod: 2026-07-11
Catalog position: Growth & Marketing · growth-misc
Indexed related skills: 10

How List Hygiene Monitor fits the catalog

List Hygiene Monitor sits in the Growth & Marketing category under the growth-misc sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

The ongoing hygiene watch, not the pre-flight — a scheduled read of list decay and suppression drift that turns the ESP export into a segmented re-permission / sunset / prune worklist. It cohorts the list by engagement recency (30/90/180/365-day last-open/click), trends hard-bounce and spam-complaint rates against benchmark and the prior baseline, and checks suppression-list growth and leakage — feeding the SEND S (Sender-integrity / Deliverability, list-hygiene sub-item) and E (Engagement, engagement-decay / sunset sub-item) signals. Scope guard: this skill produces the recurring hygiene…

What this skill does

List Hygiene Monitor is a community-contributed Claude Code skill in the growth-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/list-hygiene-monitor/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the user asks to "watch my list health over time", "flag decaying / unengaged subscribers on a schedule", "why is my open rate drifting down / bounces creeping up", or "build me a re-permission and prune worklist"; runs the scheduled SEND list-decay + suppression-drift watch — an engagement-recency cohort read (30/90/180/365-day), hard-bounce and spam-complaint trend vs benchmark, suppression-list growth/leakage check, and a segmented re-permission / sunset / prune worklist tied to SEND S (list hygiene) and E (engagement-decay) sub-items. Not for the one-time pre-send authentication pre-flight — use deliverability-qa; not for the consent/suppression record itself — use consent-registry; not for computing the EQS or enforcing vetoes — use email-quality-auditor.

Who uses this skill

The List Hygiene Monitor Claude Code skill is built for growth marketers, product-led growth teams, founders running experiments, and performance marketing teams. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 168,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/list-hygiene-monitor
curl -L https://claudskills.com/skills/list-hygiene-monitor/SKILL.md \
  -o ~/.claude/skills/list-hygiene-monitor/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/list-hygiene-monitor/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/list-hygiene-monitor/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\list-hygiene-monitor\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the List Hygiene Monitor Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/list-hygiene-monitor/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the List Hygiene Monitor skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the List Hygiene Monitor skill?

Use List Hygiene Monitor when your Claude Code task falls under the Growth & Marketing category — specifically in the growth misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use List Hygiene Monitor" or describe the task and let Claude pick). Browse related skills at /category/growth/.

What is a Claude Code skill and how does the List Hygiene Monitor skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. List Hygiene Monitor is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Growth & Marketing category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/aaron-he-zhu/aaron-marketing-skills/blob/HEAD/email/setup/list-hygiene-monitor/SKILL.md
License: Apache-2.0
Author: aaron-he-zhu

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

aaron-he-zhu. (2026). List Hygiene Monitor [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/list-hygiene-monitor/

BibTeX

@misc{list-hygiene-monitor-2026,
  author    = {aaron-he-zhu},
  title     = {List Hygiene Monitor [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/list-hygiene-monitor/}
}

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Security scan

Grade A · scanned 2026-07-31 — free static scan against the OWASP Agentic Skills Top 10.

The scan flagged 1 of 10 categories (filesystem), including lower-severity patterns. Patterns shown inside code fences are weighted as examples rather than instructions — read the grading methodology for what this does and does not guarantee.

✓ Prompt injection
✓ Data exfiltration
✓ Supply chain
✓ Reverse shell
✓ Credentials
✓ Execution
⚠ Filesystem
✓ Persistence
✓ Obfuscation
✓ Network

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/list-hygiene-monitor/#security)

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Browse all Growth & Marketing skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Growth & Marketing skills → Top 100 skills

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