SOFTWARES TO MAILING AND NEWSLETTER

como empezar con GroupMail , http://www.taringa.net/posts/downloads/1925904/Mailing---NewsLetter,-4-Programas-Full.html , http://www.group-mail.com/asp/common/articles.asp?id=250 , http://alexanderbobadilla.blogspot.com/2009/02/mailing-y-newsletter-groupmail-5.html