Integration with KnowWho is now deprecated. Soapbox currently sends messages to U.S. Senators using the Senate Communicating with Congress service.
The KnowWho communication service is used by the Actions app to send messages to U.S. Senators as Pre-Defined Targets. To enable Senators as Pre-Defined Targets, you will need a KnowWho Customer Code.
For details on obtaining a KnowWho Customer Code, feel free to submit a ticket to us!