Sandstorm is a terrific way of providing an “app-store” or one click method of installing applications on a server. There is a very good demo here:
I think Sandstorm is likely to become a very popular means of deploying applications. If Mail-in-a-Box were one of the supported applications in the Sandstorm demo, I think it would encourage people to host their own email using Mail-in-a-Box.
There is a guide for packaging and developers here:
I also think it would help Mail-in-a-Box if the licence, CC 01, were clearly visible on the Home webpage.