The next six days offer a bounty of Inflection Points.
You have discounting information in your database. You have prior Black Friday and Cyber Monday information in your database - undoubtedly you have 1/0 indicators in your database saying whether a customer purchased on both Black Friday and Cyber Monday, right?
So why in the name of Don Libey are you sending five "blasts" to all customers offering 50% off for Black Friday and Cyber Monday? Why wouldn't these "blasts" be targeted based on the 1/0 indicators in your database? Why do you want to convert a full-priced August buyer into a Black Friday buyer at 50% off?
Why do you want to convert any full-priced buyers to 50% off fake-holiday buyers?
The next 5-6 days are full of Inflection Points. Your database should have indicators that allow you to take action on these Inflection Points.