What Is the Correct Format for Cc'ing in a Business Letter?
In a business letter, a cc, or courtesy copy, is indicated at the end of the letter by "cc:" followed by the name of the recipient. Often, a comma comes after the name, and the individual's position is identified. The job title is especially important if the addressee of the letter is unfamiliar with the person receiving the courtesy copy.
For example, "cc: Jane Doe, Human Resources Supervisor" may be placed at the bottom of the page. The "cc" is sometimes referred to as "carbon copy" in reference to the days before computers when business letters were typed, and copies were made with carbon paper.