The purpose is to mass mail many recipients with each recipient appearing to be the sole recipient of the email.
This is just a simple web page made with the ubiquitous php mailer.
It worked fine and customizable but a little knowledge in HTML and PHP is a must to be able to manipulate the interface into a much better UI. Function work as it says.
Easy to install. Easy to use. Working perfectly on test with 13 adresses and attached HTML file. To be tested real later on for the next newsletter of my non profit association www.sud-sport.com with 3600 adresses.