To really figure out the benefit of either of these approaches, I think you to try to figure out how many 1st time customers you got and assign a value for the new relationship. I have never seen the return from just the orders generated by the offer(s) really be great.
The really figure out the benefit of either of these approaches, I think you to try to figure out how many 1st time customers your got and assign a value for the new relationship. I have never seen the return from just the orders generated by the offer(s) really be great.