Screened · automated checks passed
subject-line-lab
What the author says it does
Use when the user asks to "generate subject line variants", "pre-score my subject lines", or "will this subject get truncated / trigger spam filters"; produces a labeled subject + preheader variant set and a per-variant heuristic pre-score card — spam-trigger flags, length/truncation across desktop + mobile, emoji-count, and the inbox preview render (from-name + subject + preheader) — before any test is run. Not for the body copy or CTA — use email-creative-builder; not for the A/B test design or significance read — use send-experiment-designer; not for the profile-weighted EQS or the S1/S2/N1/D1 vetoes — use email-quality-auditor. 邮件主题行生成/主题行预打分/截断与垃圾词检查
Quoted from the skill's own SKILL.md trigger description — this is what tells
Claude when to activate it. Not yet verified by us.
Automated screening
100/100 validator score
Scored by the same rules as our free SKILL.md validator: trigger description quality, body substance, structure. Automated — a human bench test is the next step in the pipeline.
Install (unverified — review first)
git clone https://github.com/aaron-he-zhu/aaron-marketing-skills # skill lives at: email/engage/subject-line-lab/SKILL.md
SkillProof status
This skill is in our test queue. We install every skill in a clean environment, run a trigger battery and score output against a baseline before it earns a catalog page — the full protocol is public. Until then, treat it like any unreviewed dependency: read the SKILL.md and any scripts before installing.
Already tested in Testing & QA
- Screen Reader Testing Screen reader testing playbook for VoiceOver, NVDA, and JAWS with ARIA fixes.
- Skill Security Auditor OWASP-mapped code/secrets/config audit with working bundled scan scripts
- Web Quality Audit Lighthouse-style audit across Performance, Accessibility, SEO, and Best Practices with severity tiers.
- OSINT Methodology Structured 5-stage external recon methodology with confidence levels, severity rubric, and OpSec rules.