Your Name
Your Title
Your Address
Your City, State Zip

Date of Letter

Customer Name
Customer Title
Company Name
Customer Address
Customer City, State Zip

Dear Customer Name:

Paragraph describing how you or your company had a connection to the customer in the past.  Thank the customer for their past loyalty or purchases.

Paragraph describing how you or your company still is relevant to the customer.  Describe exciting details about the company explaining why the customer would want to become a customer again.

Paragraph describing promotions or discounts as an incentive to utilize your products or services.

Summary paragraph with your contact information such as your phone number, location, business hours etc.  Mention any additional materials included with this sales letter.

Short paragraph letting the customer know you are excited about having them back as a customer and restate any incentives mentioned above to get them to act quickly on your offers.

Sincerely,
Your Name
Your Title