The subject technology determines, by at least one processor, that a value of a capability parameter is not available for a first recipient device, the first recipient device being one of a plurality of recipient devices. The subject technology receives, from the first recipient device, a value of the capability parameter. The subject technology clusters, by at least one processor, the plurality of recipient devices into a plurality of groups of recipient devices based on device capabilities including an available storage space. The subject technology determines, for each group of recipient devices, a set of content parameters compatible with device capabilities of the plurality of recipient devices of a group of client devices. The subject technology generates, for each group of recipient devices, a version of content according to an associated set of content parameters.