A user named "dan" recently signed up for my site. His email that he needed to activate his account was sent to My email. So I checked what his email used at registration was, and it was different than mine. Why did I get his activation email?

There is an option that tells the admins there is a new user.

This is the actual email that Says:
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Dan,Welcome to We-Be-Funkeys(my forum)

Username:Dan
Password:*******

To activate your account, click the following link:

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Somthing like that.