I'd peek in all of those settings for the emails in the Configuration ... Emails ... and see if:
Send Copy of Create Account Emails To - Status
Send copy of Create Account Status
0= off 1= on
Send Copy of Create Account Emails To
Send copy of Create Account emails to the following email addresses, in this format: Name 1 <email@address1>, Name 2 <email@address2>
turning those on and configuring a valid email would do the trick for you ...