When I think of 'templates' two possibilities come to mind.
1. a theme or framework for a newsletter. For example a framework or html table that has Christmas background image or colors or Halloween background image or colors. Check! phpList has this. And thanks!
2. But another possibility is not a framework but an actual newsletter layout. A layout that is used frequently, for example. I would love to see this feature, sooner than later.
Most of my clients' email newsletters have the same layout, they just change the text & images.
It would save some time if my clients, or myself, could simply click 'Send a Message' then have the option to either upload or import a .html file or based this new newsletter on a previous newsletter.