Notifications when someone PMs you?

I think it’d be nice, especially when working in studio, to get a brief little notification sound when you receive a new message on Roblox. Correct me if I’m wrong, but in order to know when someone has replied you need to refresh your browser. This can get a bit tedious for me and others as well I assume. This could perhaps be toggled off or on based on user preferences?

What on earth is Roblox+ ? Lol