Defult notification preferences

[Reclaimer]

I would like a mod were you can set the defult notification setting for when someone logs in.

Feature:
In Admin CP being able to choose to check or uncheck all the preferences.

That's it this would be very usefull to me for when a new user registers and you want to send a PM to them but they don't get an e-mail but it just shows up on the website. Could someone make this? I mean it seems simple enough.