First, I didn't know how much effort goes into the management of an ezine. And the second thing that I didn't know was how much time it would take to build my subscriber base. Now you can automate some of these tasks using a simple email program like Eudora. These are sometimes called mailing list servers or list serves. You can get your own list server software and install on your own server.
Packages range in price from FREE to very expensive, and in complexity from manageable to complex.
A second choice would be to use one of the many online mailing list management services. I would be remiss if I did not specifically mention the service that Greg recommended to me. One that is simple to use, reliable, and inexpensive. Mark has been there for me since day one. I just can't say enough about Mark and how he has helped me and what I have learned from Mark about the online publishing business.