I've just noticed that we have new constraints available under the Opens Email and Clicks Link in Email filters/triggers for Device, Platform, Browser, and Is Mobile Device. First of all: AWESOME! To be able to filter and trigger on these constraints will be terrific. However, another equally awesome use for this data would be in Analytics. For example, I'd love to be able to add these fields into an email link performance report to see what share of the link clicks came from Android vs. iOS.