Is it possible to send email notification per site? For example, If I change something on SITE A, it will send notification to all members after 5 minutes. Then SITE B, if I update a file it will send notification every 6 hours for an update. Currently I'm using a command activities.feed.notifier.repeatIntervalMins on the alfresco.global.properties which is set to 2 minutes which means all site will received notification every 2 minutes. What I want is to have different notification interval per Site?