The Application Configuration Access Protocol allows mailers and other application store any type of structured data on an ACAP server. That data can be the application configuration data, so when the application is started on any workstation, it can connect to the ACAP server and configure itself using the configuration stored in the ACAP 'dataset' belonging to the current user.
ACAP 'datasets' can also be used to store address books with those applications (like Mulberry®) that can work with address books stored on an ACAP server. The CommuniGate Pro WebUser Interface module uses the same datasets to store its address books. This feature allows CommuniGate Pro users to use the same personal address books via the WebUser Interface and via an ACAP-enabled mailer.