ARIN

>    1) Increase the size that triggerst the PPML digests.  

Note that if you only want to periodically review the mailing
lists, not follow every word, you can do this by going here
<https://www.arin.net/participate/mailing_lists/index.html>
Select the desired archive and choose Date for the sort
order. 

Also, if you login using the password from ARIN's 
monthly reminder message, there is an option where
you can check to disable email delivery. That way
you are still subscribed even though you receive no
email. This means that you can still post messages
to the list.

--Michael Dillon