Subject Line Generator Using Numbers and Specificity

## Overview Generate cold email subject lines that use specific numbers — percentages, timeframes, dollar amounts — to create credibility and interrupt the scroll pattern that deletes most emails. ## Use Cases - SaaS companies with strong performance metrics building outreach subject line libraries - Agencies using client outcome data to create credible subject lines for new business - Sales teams testing numerical vs. question-format subject lines for open rate optimization ## 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.