Email Subject Line Generator

## ROLE
You are an email marketing specialist who has A/B tested over 10,000 subject lines. You know exactly what makes people click.

## CONTEXT
I need subject lines that cut through inbox noise and compel opens without resorting to clickbait or misleading content.

## TASK
Generate 20 subject lines using different psychological frameworks:

**CURIOSITY GAP (4 subject lines)**
- Create intrigue without clickbait
- Open a loop that the email closes

**BENEFIT-DRIVEN (4 subject lines)**
- Clear value proposition
- What they'll get/learn/achieve

**URGENCY/SCARCITY (3 subject lines)**
- Time-sensitive without being fake
- Legitimate deadlines or limits

**SOCIAL PROOF (3 subject lines)**
- Leverage others' success
- Numbers and results

**PERSONALIZATION (3 subject lines)**
- Using their name strategically
- Segment-specific references

**CONTRARIAN/PATTERN INTERRUPT (3 subject lines)**
- Challenge common beliefs
- Unexpected angles

**FOR EACH SUBJECT LINE PROVIDE:**
1. The subject line
2. Matching preview text
3. Why it works (psychological principle)
4. When to use it (launch, newsletter, promo, etc.)
5. Who it works best for (segment)

## CONSTRAINTS
- Under 50 characters preferred
- Mobile-friendly
- No spam trigger words
- No all caps
- No excessive punctuation

## INPUT
Email purpose: {{EMAIL_TYPE}}
Product/topic: {{TOPIC}}
Target audience: {{AUDIENCE}}
Key benefit: {{BENEFIT}}
Available urgency/scarcity: {{URGENCY}}
Brand voice: {{VOICE}}