In an embodiment, a client device obtains a list of client devices registered in association with a particular client application, and then detects listed client device(s) as proximate via a local communications interface. One of the proximate client devices is identified as responsible for sending an aggregated registration request message for renewing their respective application registrations with a server. In another embodiment, the server receives a registration message for the client application from a client device and detects that at least one other registered client device for that client application is proximate to the requesting client device. The server attempts to preemptively renew the registrations for both the requesting client device and the at least one other registered client device based on the proximity detection.