Cold Email for Upsell Outreach to Existing Customers

## Overview Write a cold email-style upsell outreach to existing customers — using their usage data or growth trajectory as the signal to introduce an upgrade, add-on, or expansion without sounding like a sales push. ## Use Cases - CSMs identifying usage-based expansion signals and triggering personalized upgrade outreach - SaaS companies building automated upsell email sequences based on product usage data - Account managers converting high-engagement free tier users to paid plans ## 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.