Push notification without Google Cloud Messaging

It is possible to receive push notifications without Google Cloud Messaging/Google Play Services installed, using [FakeGApps] (https://github.com/thermatk/FakeGApps) and [µg GmsCore] (https://github.com/microg/android_packages_apps_GmsCore) as explained here : https://github.com/thermatk/FakeGApps

You'll need :

• a Google-free Android 4.0+ device
• Xposed Framework for your device
• FakeGApps Xposed module
• BlankStore or FakeStore (tested with BlankStore only ; may or may not work with FakeStore or no store at all) : https://github.com/mar-v-in/BlankStore or https://github.com/microg/android_packages_apps_FakeStore
• for BlankStore only : a Google account and a GNU/Linux or OS X computer to run this Android ID generator (only once) : http://forum.xda-developers.com/attachment.php?attachmentid=3392935&d=1436186022 (there's a similar tool for Windows somewhere on the XDA forum)
• GmsCore : https://github.com/microg/android_packages_apps_GmsCore
• Kontalk (Google Play version) : https://github.com/kontalk/androidclient/releases

Everything is explained on FakeGApps [main page] (https://github.com/thermatk/FakeGApps), but in case you need another tutorial, IzzyOnDroid has a more detailled procedure here : https://android.izzysoft.de/articles/named/android-without-google-5a