@Giorgio-Chiodi at the moment, the Pushbullet API is not mature enough to allow pushes to NodeBB... But it will be, soon!
However, this brings up the problem of which category to push to... 🙂
That might be a nice workaround, although slightly nefarious in spirit 😆
That said, I don't use Pushbullet anymore, as I no longer support them since they went pro. Happy to hand over the reigns to somebody else if a volunteer is available 🙂