Currently, even though you can subscribe to Interesting Moment email alerts either by person or "type", there is no ability to unsubscribe by type, only by individual. This creates a large problem if a sales person inadvertently subscribes by type. They can be inundated with hundreds of emails they don't want with no option but to either create an Outlook rule to delete them or to modfiy all the campaigns and change the type of interesting moment created (unfeasible with a large number of campaigns running and a huge mess for reporting / tracking).