I don't know how you would tell the difference in that case so I assume yes.

The way I implement this is I bought an entire domain for spam. I created a catchall account and when I sign up for services I can just punch in [email protected] for example. All of this filters into a single email account allowing me to retrieve all my password resets and account confirmations.

This will weird out some people over the phone:

"Yes, it's [email protected]"

"Sir, to look up your account I need YOUR email address"