Why no certificate for coupons feature?

I am setting a coupon discount for a group of customers and there is no notification certificate as we have for the Gift Certificate feature. I want to know how some of you handle that.

The best way would have been to have the same option as in the Gift Certificate feature, I’m not sure how to implement it for discounts but it should not be hard since the code is already available for the Gift Certificate.

Can somebody help me or direct me to the right files to modify?