As the holiday season approaches, there is always so much activity and personal business to attend to that it is easy to forget to thank our valued customers. So before we forget at [Company], thank you for your continued patronage over the years.
I am also please to inform you that until the New Year 20XX, we are offering a 15% discount on all orders of [products] to preferred customers.
Best wishes for the New Year! And may this holiday season bring to you and your family all of the joy and happiness that you deserve.