Your cover letter format is very important to your success. With a high quality motivation letter, your chances at getting an interview will dramatically increase. Don't take shortcuts. Pay attention to both what you say (content) and how you say it (format). Your efforts will pay off in your career success!
Name (Optional but adds value to the letter if you are resourceful as to find out the name of the person who is recruiting). Title, Company, Address, City, State, Zip Code _ Salutation _ Dear Mr. /Ms. Last Name, (It is recommended that the recruiting person's name is sourced and mentioned instead of opting for Dear Sir/Madam. But do not use "To whom it may concern")