Abstract: In order to improve communication and coordination among organizations, an information-management system conducts managed communication (including tracked delivery and duplication avoidance) with information systems, information sources and electronic devices used by organizations. In particular, in response to a message about a current or potentially imminent event (such as an emergency or a crisis situation), the information-management system generates an inter-organization message about the event based on information-sharing rules of at least an organization in the organizations that specify sharable information across the organizations and non-sharable information across the organizations. These inter-organization messages include the sharable information and generalized information corresponding to the non-sharable information to control distribution across the organizations of information about: the organizations, members of the organizations, and/or the event.