Address of Company or Client,
Dear (name of the client)
Paragraph 1: The introduction of the letter should capture the attention of the reader. You may mention the problems that the client may be having and which your product or service will resolve. Introduce the company and what you specialize in.)
Paragraph 2: Introduce the product or service you intend to sell to the client. Show the client the ways in which they will benefit from investing in your product or service. Make the offer enticing without promising the impossible.
Paragraph 3: Give your contact information for the client to find out more information on the product or service.