On Tue, 18 Nov 2008 13:39:04 CST, "Harpe, Shawn" said: > Question: How soon after a message has been sent to a listserv list and it is > being processed (messages have starting being sent to the subscribers) can one > start to send to another group of users using the same list? If you're posting to *different* sets of users often enough and fast enough that the answer to that question really matters, perhaps instead of using a traditional list, maybe you should be looking at the Listserv DIST2 function or the Maestro package?