Before and After style results testimonial for a wine seller email

This “before and after” testimonial from Copywriting Course nails it. Instead of saying “we teach great copy,” it shows a 10X jump in sales — from $455 to $5,400 per email — just by changing the words. That’s the kind of punch every marketer dreams of.

The Marketing Lesson

Numbers beat words. Customers don’t want theories about why copywriting works. They want proof that it does.

Why It Works

• Shows transformation, not just claims
• Uses a simple visual comparison (red vs. green)
• Focuses on the result, not the process
• Makes it easy to grasp ROI instantly

Real-World Examples

• Basecamp shows “before vs. after” workload screenshots
• Gym ads use “before vs. after” body transformations
• Shopify highlights merchants’ revenue growth stories
• CRM brands showcase time saved per rep
• SaaS companies show metrics improvement after onboarding

Show the win. Let people connect the dots.