The sales letter format should emphasize key points while maintaining simplicity. Do not repel the customers or clients. Have normal spacing between lines and the contents just right so that the reader does not feel over_burdened reading your letter. Get the reader to feel as if he is invaluable to you and your company. The pronoun "you" in place of "we" instills a sense of warmth in the reader, drawing them closer to your business.
For most people, it is not new to hear about others who get frantic over what cover letter format to use. Truly, a cover letter format will help you in having an edge at your endeavor. This can help you land that job interview you aspire for. However, it really is not worth all the stress of browsing through each cover letter formats that you can find. You need not spend your bucks on buying different books and samples that you can lay your hands on.