You can automate the report through java script.
vars.AshokDeliveryRpt="/usr/local/neolane/nl6/var/xxxxxxxxx/export/Ashok_DS_1.xls";
var reportName = "CustomDeliveryStatistics";
var path = vars.AshokDeliveryRpt;
var exportFormat = "XLS";
isAdHoc = false;
var _ctx = <ctx _context="selection" _selectionCount="1" _selection={campId} _schema="nms:delivery" _reportContext={reportName} />
xtk.report.export(reportName,_ctx,exportFormat,path,isAdHoc);
Once report is generated in the export directory - you can add it as an attachment and send it everyday in a specified time.