1. Line managers are an important but often overlooked resource for internal communication. They have direct contact with employees and can communicate corporate messages powerfully. 2. However, line managers often lack support and training to develop strong communication skills. The document provides eight ways for internal communicators to help equip line managers, such as providing context on messages, building communication capacity, and leveraging data on the impact of line manager skills. 3. If internal communicators prioritize supporting line managers' development as communicators, it can significantly improve how corporate messages are conveyed to employees throughout organizations.