Focusing on the two basic aspects of message strategies—“what to communicate” and “how to communicate”—the chapter provides a comprehensive overview of CSA message strategies. For the “what” strategies, a company can communicate about the social issue it is addressing, its stance on the issue, and what advocacy efforts it is making, as well as highlighting its motives and its history of commitment. For the “how” strategies, we review strategies for tone, value-oriented vs. action-oriented strategies, strategies of emotional appeals, and visual strategies. We identify valuable insights attained so far but point to areas where more research is needed. The chapter ends with a mini-case study comparing the message strategies of Lyft and Levi’s CSA supporting abortion rights in response to the Supreme Court’s 2022 Dobbs decision overturning Roe v. Wade.