sending emails to filtered contacts that don't show an email attached

In Sell, when creating a smart list to send an email out to certain companies or contacts (same thing for us) I've filtered our companies/contacts with who have purchased and not purchased. I'd like to send an email or pull a report to email the filtered group of 500+ companies, the problem is the email associated with that company doesn't show up, so theres no one to send the email too.