Subject Lines That Pass Spam Filters AND Get Opens

## Overview Generate cold email subject lines engineered to pass spam filter algorithms AND achieve high open rates — resolving the false tension between deliverability and conversion. ## Use Cases - Sales teams improving cold email deliverability while maintaining open rates - Email marketers auditing subject lines for spam trigger words before sending - SDRs building sequence libraries that land in primary inboxes, not spam folders ## 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.