Coupon

[cekirge]

Hello everyone,
I want to have a coupon code that is generated according to users e-mail plus the percentage off what do you think is the best way to have it.
I was thinking of generating using md5 but i think there is a better way that i can not figure out.

Thanks

[dinger]

Have a database table (or a CSV file) of coupon codes with their respective percentages off...

Chris