We're currently using an email platform that we're not real happy with. Imail.
Exchange might be out of my company's range, however i come from a company that had exchange and i'm use to the group mailbox feature whereby you could have a general mailbox and give multiple users access to it by adding it as a secondary mailbox in their profile. You can do this with IMAIL but it does a poor job. It uses imap and caches the headers instead of using MAPI to integrate with outlook.
Does Scalix support group mailboxes?