I am a franchisee and would like to communicate with the franchisees in the same way that Geekzone forums work - but with a single forum with members (other franchisees) who can participate only by invitation. This group is therefore entirely private.
I have tried using a private group in Google Groups. This works well except for the fact that posting can be via either web browser or email. Thread continuity is lost if posters to a thread use the email method. Geekzone forums allow posting only in a browser with email notifications being used to notify that a post has been made (ie does not include the post text as Google does).
Can anyone suggest options available for this?