Personalize settings without log-in?

We are developing an app in Adalo where hopefully eventually we’ll get to options like push-notifications, and subscribe to some of them whilst unsubscribe to others. Nevertheless the app will be without a login option. Will this still be possible, let a user of the app customize his/her notification-settings without being logged in, or are we wasting our time setting up the app like we are?

Unfortunately, this would not be possible. Email is a required field for push notifications to be sent.