Friends,
I am having a Management System software, developed by me, for my institute. It stores all the details of the students, their activities, etc. in the database.
Now I wanted to include another function for my application. That is, for sending HTML email newsletters to the email addresses of my students (stored in the database).

Is there any code or tutorial for creating such a thing. The newsletter is for informing them the latest news about my institute (something like inaguration of new courses, etc..)

Please help me....