Confluence - auto-watch and bulk unwatch possible ?

unknown

Users of Confluence server 5.10. we will be upgrading in next few weeks.  I an aware of manually unchecking the profile settings to stop receiving auto emails from Confluence but my question is as Admins

1. when we create a new user is there a way to disable all defaults and user can later chose to select certain options manually.
2. Can we do a bulk de-select of existing users email notification ( not the recommended but others like autowatch)
3. As Admin , I have created numerous spaces and now I ended up watching them and receiving the auto-emails. some of them I don't even remember that I created. I stop notifications manually but as Admins we don't need to auto watch these spaces and pages and receive updates. Is this possible ? If so, could you let me know how.
4. Can I bulk unwatch these pages/spaces?

unknown

bumping it up