What is the correct punctuation after the salutation of a letter–a colon, semicolon, or comma?
Either a colon or a comma may be used, depending upon the degree of formality desired. A colon follows the salutation in formal letters: Dear Ms. Gregorson: Members of the Board: A comma follows the salutation in informal letters: Dear John, Edward, The use of a semicolon after a salutation is improper.