I've used some systems where there was a "do not notify" box that could be checked to override the default notification settings so that users didn't get e-mailed for minor changes. Is there any way to set something up like this in JIRA?
Alternatively, if this isn't possible, I'm considering setting up the notification scheme so that it doesn't send notifications for updates. Is any workaround that people know of where a user could opt to send a notification on the fly?