AgentSkillsCN

subject-line-optimizer

通过优化主题行提升新闻简报的打开率。适用于：(1) 为 tacosdedatos 版本撰写主题行；(2) 分析某一期新闻简报打开率偏低的原因；(3) 对主题行变体进行 A/B 测试；(4) 在发送前对主题行进行复审。可生成 5–10 个备选主题行，并附上相关建议。

SKILL.md
--- frontmatter
name: subject-line-optimizer
description: |
  Improve newsletter open rates through better subject lines. Use when:
  (1) Writing subject lines for tacosdedatos editions, (2) Analyzing why an edition
  had low open rates, (3) A/B testing subject line variants, (4) Reviewing subject
  lines before sending. Produces 5-10 variants with recommendations.

Subject Line Optimizer

Improve tacosdedatos open rates (currently 28-33%, target 40%+).

Context: /agents/shared/tacosdedatos-growth-playbook.md for performance data.

Proven Patterns at tacosdedatos

PatternExamplePerformance
Question"¿Nos conocemos?"High
Contrarian"A lo mejor esto de la IA sí vale la pena"31.84%
Specific/Technical"Un minutito: Anatomía de una timestamp"31.78%
Personal"Lo Que Ando Haciendo"31.4%
Direct benefit"Busca lo más vital, no más"33.52% (best)

Quick Formulas

code
Question:     ¿[Surprising question about pain point]?
Contrarian:   [Challenge common belief]
Specific:     [Number] [things] para [benefit]
Personal:     [Personal action]: [topic]
Benefit:      [Achieve X] en [time/effort]

Generation Process

  1. •Identify core value: What's the ONE thing readers get?
  2. •Generate 5-10 variants across different patterns
  3. •Check constraints:
    • •Under 50 characters (critical info in first 35)
    • •Natural Spanish (not Spain-only)
    • •Creates curiosity
    • •Matches tacosdedatos voice
  4. •Recommend top 3 with reasoning

What to Avoid

code
✗ "Newsletter #47"           → No value proposition
✗ "INCREÍBLE TUTORIAL"       → Spammy caps
✗ "¡¡¡No te lo pierdas!!!"   → Desperate punctuation
✗ "¡Mola!"                   → Spain Spanish
✗ Over 60 characters         → Gets cut off

Output Format

markdown
# Subject Lines: [Edition Topic]

**Core value**: [One sentence]

## Top Picks

1. **"[Subject]"** (X chars)
   Why: [Reasoning]

2. **"[Subject]"** (X chars)
   Why: [Reasoning]

3. **"[Subject]"** (X chars)
   Why: [Reasoning]

## All Variants

| Pattern | Subject | Chars |
|---------|---------|-------|
| Question | ... | X |
| Contrarian | ... | X |
| etc. | ... | X |