Hi all There has been some interest in Heat generating usage notifications http://summit.openstack.org/cfp/details/87 so I thought I'd implement the blueprint: https://blueprints.launchpad.net/heat/+spec/send-notification I'd like to ask for suggestions on the content of the notifications. I have added a section for Heat here (please tell me if this is the wrong place): https://wiki.openstack.org/wiki/SystemUsageData My plan was to generate the notification on each stack state change so as the wiki page says: orchestration.stack.{create,update,delete,suspend,resume}.{start,error,end} start maps to IN_PROGRESS end maps to COMPLETE If you have any other needs of the notification please respond. Thanks Angus