Does build notification from Koji are generally usefull ?

Hi, I wonder if generating package build notification (and tag migration from updates-testing to updates) is an useful feature ? With the update summary I'm sending before each repository update, and since there is already a SCM commit notification before any build most of the time, I think it's a redundant feature. Specially as some notification are failing for unknown reason, I'm thinking about disabling them at all. What do you think ? -- - Nicolas (kwizart)