As I need to create a newsletter for myself and my online presence & shop I have been looking for a cheap (meaning free!) ways to do this and the best option I have come across so far is Mail Chimp.
I have signed up for several newsletters of people/companies in my area of interest - such as people who create paper based products, designers, illustrators, design blogs etc and the majority of them use the services of Mail Chimp to send out weekly/monthly updates in the form of a newsletter. I will have to have a play around with Mail Chimp so I can understand how to design something appropriate for my branding and style hat works within the constraints of what Mail Chimp allows.