Measure the success of your discount coupons by tracking key metrics such as: 1. Redemption Rate: The percentage of sent coupons that are actually redeemed. 2. Click-Through Rate (CTR): The percentage of recipients who click on the coupon in the email. 3. Conversion Rate: The percentage of recipients who make a purchase using the coupon. 4. Revenue Generated: The total revenue generated from the coupon campaign.