[atmanactive]

That's exactly the point: there is no just in case. The rule is simple: all notifications must always be silent (not calls), if you need to reach anyone in real-time, you have to call them. No checking your phone, no constant attention grabbing notification sounds, your time is yours, life is beautiful. Whoever invented that each and every notification message requests your attention is an idiot.

[mathigatti]

But even that is not good enough, that doesn't capture the nuances of priority. A call from a family member at the middle of the night is clearly relevant but a call from a random number, someone you don't care much about or some company wanting to sell something is probably irrelevant.

[atmanactive]

Agreed. One approach could be getting yourself and your family on a completely separate IM network which is trustworthy and is not used for anything else. Then, you can set sounds for this particular app to loud plus vibration.