Anyone know a good newsletter/mass mailing program?

[SnOop005]

Can anyone sugguest a good one for me?

 

[jkoon]

Listserv, the best.

http://www.lsoft.com/products/listserv.asp

Although I have never actually ran a version which was physically installed on a system I controlled (ran a few very small lists through the universities server where I went to school) so I don?t know what the actual licensing terms are like (or the price, or if it is free/open source).