Cold Email for Product-Led Growth: Converting Free Users to Paid Accounts

Write a conversion email targeting a free plan user showing engagement signals. **User Name:** {&{USER_NAME}} **Product Name:** {&{PRODUCT_NAME}} **Usage Signal Observed:** {&{USAGE_SIGNAL}} (e.g., "created 4 projects, hit the 5-project free limit", "invited 2 teammates but can't add a 3rd on free", "exported data 8 times this month") **Paid Feature That Directly Addresses Their Behavior:** {&{PAID_FEATURE}} **Concrete Value of Upgrading:** {&{UPGRADE_VALUE}} (e.g., "unlimited projects, team collaboration, API access") **Social Proof for Paid Plan:** {&{SOCIAL_PROOF}} **Upgrade CTA:** {&{UPGRADE_CTA}} (e.g., "upgrade now", "start a 14-day trial of Pro") **Price Point or Offer:** {&{PRICE_OR_OFFER}} **Instructions:** 1. Open by acknowledging their specific usage signal — make them feel seen, not surveilled. 2. Name the exact limit or friction they're about to hit (or have hit) in one crisp sentence. 3. Show them what's on the other side: specific features that match their behavior pattern. 4. Use social proof to remove risk — who else upgraded in similar situations. 5. Close with one clear upgrade CTA and an optional risk-reversal line (free trial, cancel anytime, etc.). **Output Format:** - Subject line (usage-triggered, personal) - Email body (100–130 words) - One-line CTA button text - Risk-reversal line **Quality Rules:** - The email must feel like it was written after looking at their actual account — not a generic "you've been using the free plan" blast. - Never use the word "upgrade" in the subject line — it reads as sales, not as value. - The feature callout must be directly tied to their observed behavior, not a feature list.