Subject Line Rewriter for Cold Emails Getting Low Open Rates

## Overview Analyze and rewrite 5 underperforming cold email subject lines — diagnosing why each failed and providing a replacement with psychological improvement rationale. ## Use Cases - SDR managers auditing team subject line libraries to improve open rates - Sales enablement teams building subject line best practice training - Founders reviewing their own cold email sequences before scaling outreach ## Why This Prompt Works This prompt is engineered for professional outreach that converts. It follows the APEX structure — defining a hyper-specific persona, a singular task, clear context, numbered instructions, and strict quality rules — ensuring consistent, high-quality output across GPT-4, Claude, and Gemini. ## Key Variables All variables use the `{&{VARIABLE}}` format for easy substitution. Replace each variable with your specific context before using.