I love this concept. Databaser is designed for your own flatfile databases on the web. You can create an unlimited number of new databases with freely configurable fields. These databases can be plugged into any other of our scripts. MailManager is a mailing system that does it all.
Users can add or remove themselves from the list.
Included features are Autoresponder Mails, Mail Logging, Form Field checking and a mailbase management. Perfect for your subdomains or when you resell sub-accounts. The price is negotiable and depends on the number of subdomains and sub-accounts you would like to administrate with DiskUsage. It automatically creates a sample HTML page containing the code. It includes the superb AXS Site Tracker as logging module.