1. Theres the option under my stuff:
My Stuff -> My Preferances -> Notify me when a new user registers on the forum.

However if you have the option selected that users need to be approved by an admin before registration completes, i believe this is standard behavior.

2. All emails sent from the forum are sent by the board email address set in:
CP -> Master Settings -> Primary Settings -> Board Email Address

I believe that an email is only sent when declining when you enter a reason for a decline.

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