How do the colleges know that you sent your SAT/ACT scores?

<p>Do they identify the email on your ACT and SAT accounts and then match it with your UC/CSU app account? Do they match the name/billing address? I'm asking this because the accounts aren't linked, so I am sending the app on another site, and then sending the scores from another site, on a different account. If they identify on email... I have a problem because my email is different for my SAT/ACT account compared to my UC/CSU app accounts.</p>