Okay, good to know. The problems I am experiencing is on openacs.org if I only sign up for a component, I don't get the notifications, neither do they work if set to anything but instantly.
On my own instance of bug-tracker, they don't work at all and I am in the process of debugging workflow why that is the case, but with your E-Mail summary function it is even better as I can shove it under the developers nose whenever I want to, not when he thinks he likes to receive notifications.
