I‘ve long been a fan of MailChimp for e-newsletters, but they just keep getting better and better. Most recently, MailChimp increased their free account from a list of 1,000 to 2,000. I’ve done lots of research on this, and you have to trust me when I say you won’t get a better deal!
They key to growing your e-newsletter list is to make it really easy for people to sign up (and to offer really great, valuable e-newsletters, because if you don’t give people a reason to read it, they won’t). Obviously, you should have a sign-up box on your website (you’ll see mine just over there to left in the sidebar), but you can also put one on your Facebook page.
If you don’t have an e-newsletter, yet, there’s no real reason why not–they are basically free! Here are a couple of posts on the topic:
E-Newsletters Part 1
E-Newsletters Part 2
It’s pretty easy: here’s how to add a sign-up box to your Facebook page.