Use APKPure App
Get Send Push Notification old version APK for Android
Envoyez une notification push à votre application
Send push notification to your App to topics.
prerequisites:
1. Get server key from cloud messaging tab
2. You should know topic name subscribed by your app user.
This app is only for developers.
note: notification log stored locally if you uninstall app log will be cleared. you cannot restore it later.