Use this letter as a confirmation of a particular sale.
{Date}
To: {Name}
{Address}
{City, State, Zip}
Dear {Recipient},
I am so pleased that you have decided to order {description of product} from {name of company}. This letter simply serves as a confirmation of that order.
I was happy to provide you with all your {type of product} needs, and I look forward to our continued relationship.
Remember that {name of company} will always be here to provide you with {type of product, or other things company provides} and, of course, excellent customer service. If there is anything more I can do to help, please don't hesitate to call.
Thank you,
{Sender}