T-dah is an Open Sourced Universal Webmail origially developed by Aldoir Ventura under the name Uebimiau in which we picked up late in 2007. It is free and can be installed on any server that supports PHP.
Features at a glance
T-dah is Open Source. That means you can download and use it for free and you don't have to pay anything for distribution . But if you use it commercially or just want to say "thank you" you should donate to the project. How to donate? Just take a look here to help us out.