It is established etiquette by the Joint Chiefs of Staff, United States Department of Defense, the U.S. Army, the U.S. Navy, and the U.S. Air Force that the closing “Respectfully yours” be reserved for the President of the United States (according to U.S. Army standards, this also extends to the first lady and the President_elect).
Include Information about the Company: One must clearly state the name and the address of the company. Try to use a letterhead of the company for any business use. Include the date: Writing the date helps the person to have a record of the on_going business. Add the Recipient’s Information: In a business letter, one must clearly type the name, address, and the job title of the recipient to remove any ambiguity. Choose a Salutation: It is a way of showing respect towards the recipient. One can also use ‘To Whom It May Concern’ if he doesn’t know the person addressed.