We loooooooooove us some MailChimp. It's free up to 2,000 subscribers and has a bevy of awesome and easy to use features. And, who doesn't enjoy their little chimp mascot??
Not so shameless plug: We aren't trying to upsell you, but Paul does have an entire course that can help you become a wizard at using MailChimp. Because you bought How Dare You, you can get $50 OFF his course Chimp Essentials (use the code: HDY). No pressure to buy, just wanted to share.