To add push notifications: create a free OneSignal account and an Android app in it, copy its App ID, paste it into the builder's Push notifications step, build, and send notifications from the OneSignal dashboard. On Android 13 and newer the app asks the user for permission on first launch.
Step 1 — Create the OneSignal app
- Sign up at onesignal.com and create a new app.
- Choose Google Android (FCM) as the platform and follow its steps to connect a Firebase project — OneSignal uses Firebase Cloud Messaging to deliver to Android.
- Copy the OneSignal App ID from the app's settings.
Step 2 — Add it in the builder
In the builder, open the Push notifications step, paste the App ID and build. Push works in the demo APK too, so you can test it before subscribing; the app you publish is built with Builder Pro.
Step 3 — Send a notification
Install the app, open it and allow notifications. In OneSignal, create a message, choose your audience and send. Add a link to open a specific page of your site when the notification is tapped.
What to send
- Shops — order updates, back-in-stock, a sale starting.
- Blogs and news — a new post, breaking news.
- Schools and clubs — closures, event reminders.
Send less than you think: an app that notifies too often gets its notifications turned off, or gets uninstalled.