University of Oregon

Digest Options in Mailman



To access the administration page in order to make any changes for a particular list, go to:

Change the text that says "LISTNAMEHERE" to the name of your list. For example, for list name 'sastest', you would go to and continue to log in with the associated admin password for the list, on the list's login page.

Digest delivery is a way to bundle many messages into one package, which can be delivered once per day, or whenever the package reaches a specified limit. Some users will prefer this method of delivery, as it limits the amount of individual messages each user recieves.


Batched-delivery digest characteristics

batch-delivery digest characteristics

With the first option (digestable), the administrator may enable or disable the digest option. By default, it is left enabled, meaning that it each list subscriber can choose whether or not they want to recieve list messages that way.

The second option (digest_is_default), allows the administrator to set the default delivery mode for new users. A user may change his or her digest setting at will; This setting only affects new subscribers.

The third option (mime_is_default_digest), allows the administrator to set the default format of the digest message. Here you have two options: MIME and Plaintext. The default is plaintext, which is a format that can be read by most, if not all, mail readers. It will allow the widest range of compatibility. MIME

(digest_size_threshold) is the option that allows the administrator to specify the maximum length that a digest message can be before it is sent out and another one is started. The next option (digest_send_periodic) will determine whether or not a message is sent daily whether or not the digest threshold is met.

the (digest_header ) and (digest_footer) options provide locations in which the administrator can include a message or notification at the top or bottom of each digest message.

When a digest list is started, it begins at Volume 1, Issue 1. Each time a message is sent, by default Mailman will increment the Issue counter by 1. The (new_volume) option determines whether or not Mailman ever increases the Volume counter. The default is "no", but if it is set to "yes", the (digest_volume_frequency) determines how often the list increments the Volume counter. The default is monthly.

The last option, (send_digest_now), allows the list administrator to immediately send the digest message regardless of message length.

For more information, please contact the Information Services Technology Service Desk