Basically what you are suggesting here is how digests are often handled with
list servers not specifically designed to provide this mode.  Typically a second
mailing list is created and set to send mail at specified intervals.  Then this
list is subscribed to the first non-digest list.  I believe that there are
scripts available to handle the mail processing.  Once this is in place, one
simply subscribes to the mailing list providing the service desired.
- Wayde Allen
  (74160.3410@compuserve.com)