Campaign Monitor lets you create beautifully email marketing campaigns and easily send them to your followers.
“Campaign Monitor enables us to easily communicate inspiring and engaging messages with our supporters and donors.”
For a non-profit I support, our list is 8,885 recipients. We have an account set up that only charges us when I send an email to our subscribers (e.g. no monthly subscription). So we paid $84.22 for our last email blast (includes a 15% discount for non-profits).