Judge.me supports 2 types of coupons to incentivize your reviewers:
Static Coupon: only 1 Static Coupon can be set at a time and it can be sent to many reviewers. Static Coupon is required when you enable coupon feature, even when you already have uploaded Dynamic Coupons.
Dynamic Coupons: you can upload as many Dynamic Coupons as you want (more instructions here). When Judge.me sends a Dynamic Coupon to a reviewer, it will be consumed and no longer available. Therefore, different reviewers will receive different Dynamic Coupons, except for 2 cases: