This is not possible at the moment and it is not simple at all. The list owner decides the frequency and maximum size of the digests. LISTSERV maintains a single digest file, which does not require that the list be archived, and when the limit is reached it just sends it out. In order to do what you want, one would first have to require that the list be archived. Then for each user a customized digest would have to be built after the fact from the archive, where each digest could have a different size, topic list, etc. This in turn means DISTRIBUTE cannot be used, and the machine + network cost is much higher. Finally you have the interesting issue of when the digest is sent. In fact, most of the complaints are not about the frequency, but about the time when the digest is issued. For daily digests this is always at the wrong time for someone's time zone, and for weekly digests you have people who want it on Friday evening, people who want it on Sunday morning, etc. Eric