Can Protected Content be configured in a manner that registration for eNewsletter is used as payment

I have a site with some forums (using WPMU Forums plugin) are on the site. I would like to make the forums protected content using the Protected Content plugin and having “payment” for the protected content dorums be that the visitor has to sign up for the site’s eNewsletter.

I noticed that Protected Content has an addon that integrates the plugin with Mail Chimp where someone registering with Protected Content can be automatically assed to a Mail Chimp list. Surely if it will integrate with a 3rd party mail list like Mail Chimp it will work with a mail list on another WPMU plugin like eNewsletter, right…?