Kiwi does not have reporting capability out of the box, it all has to be scripted.
You could do this via a local installation of MySQL or SQL Server (my preferences for DB Engines) and use their built in SMTP configuration to attach and email the report as part of a stored procedure that generates and exports the data to a report.
You could also utilize Kiwi's scripting engine to build and email the report just like the syslog statistics report that actually is available right out of the box and just needs to be enabled.