Web Script Tutorials
Mailing List
DadaMail
Dada Mail is an easy to setup E-Mail List Management System to use on your website. It works on any site that can run CGI scripts and can be setup in minutes. Dada Mail is *not* Majordomo-like, meaning it's not hard to setup, administrate, or customize.
Installation | Send HTML Messages
phplist
phplist is an open-source newsletter manager. phplist is free to download, install and use, and is easy to integrate with any website. phplist features double opt-in subscriptions, scheduling RSS, list segmentation, click tracking, attachments, bounce management, and much more.