I have an app developed on Swift which I need to receive notifications. Investigate and the only way I found is to do it with push notifications using firebase. The notification will be launched from a .NET app using the user's email.
It's fine if I use cloud functions in which I receive the email and authenticate with firebase.auth to get the uid of user, and then write the message in the realtime database, and then with another function send the push message ? The problem is that the .NET app only has the user's emails, I can not get the token generated by the firebase.