Vogue writers think there needs to be more etiquette in professional emails. The publication admits that email is casual in nature, but thinks that 'Best' is a better way to sign off a business email than with a digital air kiss "X". "'Best' is only three letters longer than the oft-used 'X,'" the fashion magazine explains. Other things that irk Vogue writers in email: The use of 'Dear', 'K' and pitches that begin, 'Hey Bro.'