yith-woocommerce-coupon-email-system

Plugin do the work, that's sure, but selling a "premium" version at this price is amha exagerated for something excessively simplistic : no activity logs (which means you dont' have any idea of mails sent to who and when), no customisation of woo coupons system (which means you have to set a lot of details on your own and try to remember it later ...), no use log (which means you don't have any idea of when is used and by who a couppon sent by the system), etc. Really don't deserve 50 $ !