How does Filtrate learn about my notification preferences?
You teach Filtrate your preferences by swiping notifications left and right when you view them after a filtration session.
Swiping left tells Filtrate the notification is spam and you wish you'd never seen it. Swiping right tells Filtrate that the notification is urgent and you wish you'd seen it. Doing nothing tells Filtrate this notification is normal and it was good that you saw it once you were done filtering.