The free gift should be related to the product or service you are selling. Highlight it within the body of the letter to make it stand out. Close by asking for the sale.
1234, Main Street
Boston, MA 02123
09 April, 2005
<Recipient Address Goes Here>
<Reader's need.> We have <what you have to offer>.
<Details of the offer.>
<Ask for the order.>
encl: <List of enclosed items goes here>