# Tool: Best Prompt for High Converting Cold Emails

> Generates copywriting prompts for B2B cold emails with punchy subject lines, pain point hooks, value propositions, and low-friction calls to action.

**Category**: prompts-writer | **Target AI Models**: Gemini 3.6 Flash, GPT-4o

## Domain Parameters:
- `emailLength` (select): Outreach Length & Format (Default: "Ultra-Short")
- `ctaType` (select): Call-to-Action Friction Level (Default: "Soft Question")
- `personalizationHook` (toggle): Require Line 1 Industry Pain Point Hook (Default: "true")
- `spamGuard` (toggle): Filter Spam Trigger Words & Hype (Default: "true")

## Master Prompt Engineering Architecture (5 Pillars):
1. **Role & Persona**: Domain expert framing
2. **Task & Deliverable**: Primary objective & constraints
3. **Context & Parameters**: Technical specs & camera/stack parameters
4. **Negative Constraints**: Forbidden artifacts & bad practices
5. **Output Spec**: Section formatting & XML/Markdown structure

## Programmatic API Execution:
```http
POST /api/generate-prompt
Content-Type: application/json

{
  "toolSlug": "best-prompt-for-high-converting-cold-emails",
  "rawPrompt": "Your raw concept here",
  "thinkingLevel": "HIGH"
}
```