Exclude Roles

Thanks for a great module.... One item that would make it near perfect is to be able to exclude roles. Here is our scenario...

We currently have authenticated users and then we have users with a "member" role. Our "member" users have gone through our Ubercart system and purchased the role for content access. We want to be able to send all our non-members (authenticated users) a mass contact email, trying to convince them to become full members.

So as this module works currently, by checking authenticated users, all users would be sent the email. We need to be able to exclude roles from getting the email when we check "authenticated users".