Currently custom reports do not export data that includes email views on desktop/mobile/tablet. This is only viewable in the campaign reports. I need this included in the custom reports so I can easily access those numbers across many campaigns at once rather than doing for each campaign report.
This breakout is something that we are adding to the new Pivot Tables feature (which I am getting set up for you). The custom reports is not the right place for this because we display email responses aggregated within the report. Breaking out opens by device and clicks by device does not fit with the way that custom reports are constructed.
Pivot Table reporting, on the other hand, is perfect for this kind of analysis. I'm really excited for this new feature! :-)
Vice President - Product Management
Maropost Marketing Cloud