Skills for Real Engineers. Straight from my .agents directory.
39 skills
subject-line-lab
Agent skill from
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
How to install subject-line-lab
install subject-line-lab
# install the aaron-marketing-skills pack with the skills CLI
npx skills add aaron-he-zhu/aaron-marketing-skills# or add only this skill to Claude Code: copy the folder
email/engage/subject-line-lab/
# into
~/.claude/skills/subject-line-lab/ (all projects)
.claude/skills/subject-line-lab/ (one project)
1# Subject Line Lab23Generates a labeled subject-line + preheader variant set and **heuristically pre-scores** each variant — spam-trigger flags, desktop + mobile length/truncation, emoji count, and the rendered inbox preview (from-name + subject + preheader) — so weak candidates are cut *before* they burn a test cell. This is the pre-test bench for the SEND **E (Engagement)** lever: it sharpens the subject/preheader unit that `email-creative-builder` drafts and hands the ranked survivors, each with a stable variant id, to `send-experiment-designer`.45**Scope guard**: this skill drafts and pre-scores subject + preheader variants only. It does not write the body copy or CTA ([email-creative-builder](../email-creative-builder/SKILL.md)), design the A/B / send-time test or read out significance ([send-experiment-designer](../../deliver/send-experiment-designer/SKILL.md)), run the full deliverability spam-content scan ([deliverability-qa](../../setup/deliverability-qa/SKILL.md)), or compute any SEND dimension score. The heuristic pre-score is a **flag, never a verdict**: [email-quality-auditor](../../deliver/email-quality-auditor/SKILL.md) owns the profile-weighted EQS and all four vetoes (S1/S2/N1/D1).67## Quick Start89```10Pre-score these 6 subject lines for truncation + spam triggers, from-name [Sender], promo mode: [paste]11```1213```14Generate 5 subject-line variants + preheaders for [offer], cold-outbound mode, and rank them by pre-score15```1617```18…
Excerpt shown under the repository's Apache-2.0 license.
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