What is a “digest”?
The robot saves up messages sent to the list and, when it reaches a specified file size or number of days, sends this compilation out as a “digest” to all who belong to the digest version of the list. The advantage of the digest version is that you will receive only one message (digest) every day or two, making it easier to scan through the material, skipping messages that may not be of interest to you. The disadvantage is timeliness. You don’t receive each message at the time it is distributed to the list. You may not get it (as part of a digest) until the next day.