I recently published this module for web push, works on desktop without a mobile app.
Check ti out https://marketplace.mendix.com/link/component/114331
-Andrej Gajduk
Hi,
You can request the APIs and authorization from the browser using Javascript actions and for the action you can do REST calls through Mendix.
Regards
Diego Antonelli
Widgets Team – Mendix
I don't think there is an ‘out of the box’ solution for this in the appstore. There are however some third parties who offer this like for example one signal :https://onesignal.com/webpush
This will let you do webpush from Mendix through REST