I'm looking for a simple, preferably free app for managing mailing lists. I'd like to be able to create groups (Users, Employees specifically). It should be able to produce good looking HTML emails.
I'm on an PHP/MySQL server, so anything that's online/easy to configure with that would be great. However, I'd be willing to consider an option which is hosted elsewhere if it was affordable.
Please only answer if you've used the software before and can truly recommend it. The two I've been considering thus far are PHPList and Newsberry.