1. Open Rates: Indicates how many recipients opened your email. 2. Click-Through Rates (CTR): Shows how many clicked on your offer or CTA. 3. Conversion Rates: Tracks the percentage of recipients who completed a purchase. 4. Revenue Generated: Measures the total sales resulting from the campaign. 5. Customer Lifetime Value (CLV): Helps understand the long-term value of customers acquired through these campaigns.