i'd like to be able to automatically generate an email to all my registered users on my WPMU whenever a new post goes up. does such a plugin exist for WPMU? i've done some searching, can't seem to find what i'm looking for.
essentially i'm looking for something like the "Post-Notification" or "Subscribe2" plugins, only for WPMU. (i tried installing both of those plugins, but they're written for single-user. didn't work.)