In an embodiment, a server registers first and seconds client applications on the same client device. The first client application on a client device obtains, from the server or some other source, application-to-application communicative information for facilitating communication between the first and second client applications. Based on the application-to-application communicative information, the first client application configures a given registration request message that includes (i) a request for renewing the first client application's registration with the server, and (ii) a request for renewing the second client application's registration with the same server, and transmits the given registration request message to the server. The server renews the registrations for the first and second client applications in response to the given registration request message.