digest
A periodical collection of messages which have been posted to
a {newsgroup} or {mailing list}. A digest is prepared by a
{moderator} who selects articles from the group or list,
formats them and adds a contents list. The digest is then
either mailed to an alternative {mailing list} or posted to an
alternative newsgroup.
Some {news reader}s and {electronic mail} programs provide
commands to "undigestify" a digest, i.e. to split it up into
individual articles which may then be read and saved or
discarded separately.