Automated Upsell & Cross-Sell Email Sequence Generator

Generate a chain of 5 email prompts designed to automate upselling and cross-selling for a SaaS product focusing on project management.  Each email should target a specific customer segment based on their usage data (e.g., users who haven’t upgraded, users frequently using a specific feature, users with a large team).  The first email should be a gentle reminder of the product’s core value and highlight a relevant upsell/cross-sell opportunity. Subsequent emails should progressively increase the offer’s value and urgency, potentially including case studies, testimonials, or limited-time discounts.  The final email should offer a personalized consultation or a final discount as a last-ditch effort.  Ensure each email includes a clear call to action and avoids aggressive sales tactics.  Consider A/B testing various subject lines and email copy.  The output should be formatted as a numbered list, with each number representing an email in the sequence.  Each email prompt should include: Subject Line, Target Customer Segment, Email Body (including upsell/cross-sell offer), and Call to Action.  Focus on increasing customer lifetime value (CLTV) and reducing churn.  Assume the SaaS product is called “ProjectZen” and offers a free, basic, and premium plan.  The upsell could be from the basic plan to premium, and the cross-sell could be a related time-tracking add-on called “TimeWise”.