If you’d like to receive an email every time somebody signs up using your registration form, you can add your email address as a CC address on the receipts. to do this, navigate to the Basic Info page for your registration form, and click on the Email Receipts button.
Then, enter your email address in the Send a Copy of Each Receipt to field:
You can enter multiple email addresses in this field, each separated by a comma. But please be careful to only enter valid email addresses – trying to CC an email address that doesn’t exist may make your receipts more likely to be flagged as spam