Is there any way to integration Vivox with Push Notification service?

I want to create a text chat inside my game for Directed Messages (chat between 2 players).
When a player A send a message to another player B, and the player B is offline, I would like to send a push notification to player B about the message received (similar to whatsapp).

Is there any way to integrate the Vivox with unity’s Push Notification service ?

Any ideas of possible ways of doing it is appreciate.