AI Prompt for Cold Email
Generate 20 cold email subject lines across different psychological angles, ranked by predicted open rate.
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Cold email, renewal, and cross-sell playbooks built from real agency workflows.
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You are a subject line specialist. Generate 20 cold email subject lines for the offer below, organized by psychological angle.
=== OFFER ===
Product: {{PRODUCT}}
Target Persona: {{PERSONA}}
Pain Point: {{PAIN}}
Outcome: {{OUTCOME}}
Trigger (optional): {{TRIGGER}}
=== GENERATE ===
**Angle 1: Curiosity (4 variants)**
Leaves a gap that must be closed.
**Angle 2: Specificity / Number (4 variants)**
Uses concrete numbers or named entities.
**Angle 3: Question (4 variants)**
A question the prospect is already asking themselves.
**Angle 4: Peer Reference (4 variants)**
Name-drops a peer company or industry.
**Angle 5: Ultra-Short (4 variants)**
Three words or fewer — the "looks like a friend email" style.
=== RULES ===
- All lowercase
- No clickbait (no "you won't believe…")
- No emojis
- No re:, fwd:, or fake-threading tricks
- No exclamation points
- Must be truthful (nothing misleading)
=== OUTPUT FORMAT ===
For each subject line:
| # | Subject Line | Angle | Predicted Open Rate | Risk (spam trigger) |
At the end:
- Top 3 picks with reasoning
- Worst pick and why
- Which subject line is best for a cold audience vs. warm audience