I've enabled InterAct and created a new mailbox for creating a new project via email. The application works great when implemented by a user with a "Full" license but when a user with a "Email" license tries to use it they get the following email reply.
You do not have a license; please contact your administrator to provide you a license...
The Way to Work
The "Email" license user appears to be setup correctly and can provide progress updates through email without any problems. Is InterAct not available to "Email" licenses?