A messaging system, in one embodiment, can establish messaging accounts for a plurality of organizations (e.g., businesses) to allow customers or users of the organizations to conduct two-way messaging sessions between a customer and an organization. The messaging system can use a registration portal to allow an organization to set up a business/organization messaging account by providing account information. The account information can then be used to update one or more searchable databases that allow a customer to have multiple entry points into a messaging session with each of the registered businesses in the messaging system. For example, a search through a web browser or a map application can provide search results that contain or otherwise provide access to a selectable messaging option that is presented on a customer's device.