[tim-projects]

This makes me think of MSN,AOL or ICQ which had an online status and notification system.

Why did that go away with modern messaging? WhatsApp and signal don't have it. Sms? Not sure. I think Facebook messenger does.

I can remember this was an important feature that everyone actively used.

[cjflog]

I think it went away because everyone became "online" all the time, but that also meant most communication transitioned to async

[adrienfr31]

On professional chat apps, you still have the option to set your status to online or offline. But there’s no "I just feel like chatting" option. Or else, that’s what the coffee machine is for.