What is EZMLM?

EZ Mailing List Manger. It lets you send the same email to as many people on your list as you would like.

How do I setup ezmlm?

Go into NetAdmin and select the Mailinglist Manager under the E-Mail Management Category. You will need to enter your EZMLM password to log into it.
Click on create and make a name and address for the list. Specify which options you would like and then click on "Create List." Then choose the list and click on "edit" and add the necessary subscribers and moderators.
More information is available in the netadmin tutorial.