Hi Michael, If you are subscribed to ARMADISO-L, you will receive each message individually. If you are subscribed to ARMADISO-D, you will receive a group of messages in one email. Digest messages are sent at least once every 12 hours, or if there are many messages, more often. Peggy In a message dated 4/23/2000 6:57:16 AM Central Daylight Time, [email protected] writes: << What is the difference between the List and the Digest? Michael Isam, St. Augustine, FL >>