The administrative email addresses for bug-wranglers don't work. I'm not able to change my bug-wranglers subscription to a digest subscription. I tend to switch mailinglist subscriptions to digest mode when the volume of email exceeds a hunderd messages a day.
the whole point of bug-wranglers is to get mail when new bugs come in.
the whole point of a bug-wranglers daily digest email is to see what new bugs have come in during the day and how they were reassigned. I can help set up the administrative email, if there are no resources for it.
I would suggest that you have the bugs either sent to a folder, or unsubscribe from the list when you're inactive. bugwranglers is a special list that has special options that are very different from the other lists, and it is specificly designed this way.