Even messages that are more informational and matter-of-fact than
persuasive need to be believable. Your sincerity and passion need to come
through in order to motivate your readers to act. One of the ways you can
achieve a professional tone is by adding specific details. Numbers, facts,
statistics, examples, and illustrations all contribute to the credibility of
your communications. Weave them into your text to increase believability
and the impact of your communications.