Re: Also this may affect AquaMail
Google has expanded the ConnectivityManager API to provide apps with the ability to check whether Data Saver is enabled and see if they've been whitelisted. Users can permit certain apps to use as much data as they want, even with the toggle switched on.
Yes, but I'm not sure how to handle it.
The app already has setting for how many messages it syncs, how much it preloads, etc.
Maybe a new setting category (in addition to WiFi / mobile), specifically for "mobile when data saver is on"