My vote is to leave it as it is also.  But, if you really want
something to consider, I'm on another listserver that has taken
care of this type of thing.

They offer two options.
One is called "non-Digest format" where each email to the group
is forwarded out as a single post.
The other is called "Digest format" where a certain number of
emails get grouped together and sent out as one email to the group.

They have maybe 100 people as subscribers.  Here on TechNet we have
approx 1,400 members.  Our good people at IPC taking care of all
this are already a little overworked.  In other words, one post a day
produces 1,400 copies.  40 posts a day produces over 56,000 copies a
day.
That's 2,300 copies an hour.  Keep in mind that adding additional
operations for filtering emails means additional cpu time which
means a slowing down for us.

################################################################
TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
################################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
To subscribe:   SUBSCRIBE TechNet <your full name>
To unsubscribe:   SIGNOFF TechNet 
################################################################
Please visit IPC web site (http://jefry.ipc.org/forum.htm) for additional information.
For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311
################################################################