Since 1.7f-7, you can do: set listname digest set listname mail When switching from digest to mail, there is a risk of not seeing the messages accumulated between the time the last digest was issued and the time you issue the command. So LISTSERV mails you the current digest. It works the same for indexes, but not when switching from digest to index and vice-versa. In that case you only change your preference for the delivery format, and don't lose any message. Eric