A system configured to perform operations that receive an indication of a power event occurring at a first device for an online identity. The power event causes the first device to switch from an external power source to an internal battery. The first device represents that the online identity is online while the first device receives power from the internal battery. The operations can further evaluate a priority value of an online contact for the online identity against a threshold value and hold, at a second device, at least one status update for the online contact while the first device receives power from the internal battery in response to evaluation of the priority value against the threshold value. The operations can further release, for transmission to the first device, the at least one status update in response to determination that the first device switches back to the external power source.