Users seem to want a facility whereby Oscailt will email out to a mailing list the set of upcoming events.
The problem is a little tricky because how close to the event should the email be sent, how often. And then if there is an edit and the event time is changed, or cancelled or somehow spam was publised as event, then they are also potential problems too.
The resolution is probably to send the events about 2 days before and not send hidden events. And to provide a management screen for editors to override whether an individual event should not be sent or even resent.