Excellent, this is exactly what we needed. I'm amazed that there wasn't a newletter function in the standard IPS package. Anyway, this addon works brilliantly, it's well thought out and highly configurable.
In answer to the two requests for a screenshot of the HTML output: The HTML email is a template which you can edit yourself, as long as you've got a basic understanding of HTML & CSS
One thing that wasn't mentioned in the blub above is that the newsletter email task is set to run every 10 minutes, and sends a maximum of 50 emails per cycle which means we won't fall fowl of our email limit, which is good!
Over all... 5-stars... Excellent... Many thanks :)