One of the secretes to a successful web site is the bringing visitors back to your site. One of the best ways to do that is by keeping in touch with your visitors with a mailing list. Fortuna is a great mailing list program that is easy to setup and use. Users can easily add themselves to the list. Other features include: Password protected admin area, Message counter, Supports a lot of email addresses, Checks for invalid and duplicate emails, and Logs admin sessions to external log file.