As a valued customer of [name of company]， we couldn't wait to bring you the good news.  This letter is to announce the incorporation¹ of our new customer incentive² program （CIP？）。  Well， maybe we haven't thought of a great logo for it yet， but if you read on I think you'll agree that no matter what we call it， it's super！

　　Starting on June 1st， a record of your account with our store will be maintained on a cumulative³ basis for a period of one year.  Once your purchases have reached $500， you will be automatically entitled to a 5% discount on any order placed， including orders for sale items. When your orders have reached the $1，000 mark， your discount will increase to 10%.  A $1，500 accumulation of orders will entitle you to a 15% discount and once you have reached $2，000 you will receive 20% off all merchandise orders.  We think it's a great idea and hope that you agree.

　　Won't you send us a purchase order today to get you started on your way？  If you think of a good name for us to tag onto this new discount program， please let us know！