1. A method for displaying messages, comprising: in response to a first user action at a first client device, displaying at the first client device a first subset of a first plurality of messages, the first subset ordered by a first importance score calculated using a first importance predictive model; in response to a second user action at a second client device, displaying at the second client device a second subset of a second plurality of messages, the second subset ordered by an second importance score calculated using a second importance predictive model; wherein the first and second pluralities of messages comprise messages in a single user account of a respective user; and wherein the first and second importance predictive models are distinct.