There are many email service providers, both free and paid. Do not go with a free service – many of the paid services are free up until a certain list size.
I personally use MailChimp and highly recommend them for their easy to use interface, how-to video tutorials, and live chat. Plus, they give you a lot more control over how you manage and segment your lists. As your list grows, that becomes very important. You want to be able to move people from one list to another or add them to a new interest group that you just created.
1. Set Up Your MailChimp Account
If you do not have a MailChimp account, Sign Up Here
It's free up to 2000 subscribers and very reasonable after that. If your list doesn't more than pay for itself, you're doing something wrong.
2. Create A Subscriber List
The next step is to actually configure your list.
4. Connect Your Blog To MailChimp
Once you have created your list, the easiest (code-free) and fastest way to add a subscribe form to your site is with the MailChimp widget.
1. Login and go to your Blog Dashboard
2. Go to Settings ->MailChimp Setup in the left menu. This will take you to the MailChimp Settings page.
3. Next you'll need your MailChimp API Key.
Here's are instructions for how to find it:
Copy and paste the MailChimp API Key into the box shown below and click the connect button.
4. Once connected, select a list and then scroll through the settings to see if there's anything else you want to change, then click "Update List"
Now you're ready to add a subscribe form to your blog.
5. Add A Subscribe Form To Your Blog
Go to Appearance > Widgets and drag the MailChimp Widget to the Primary Sidebar widget area. (Make sure to clear the cache so that your changes show up immediately on the live site)
Now you have a subscribe form on your site :).
If you need more control over the way the form looks, here's how to use the Genesis eNews Extended widget to add a more customizable subscribe form to the sidebar.
6. Launch Your RSS Campaign
Now that you have a list, and a subscribe form, let's actually set up the RSS email campaign that will automatically send blog updates to your subscribers.
Here are instructions for how to do this in MailChimp: https://us2.admin.mailchimp.com/
You will need your blog's RSS feed address.
We've already set this up for you. It will be your blog address with "/feed/ at the end of it. (e.g. - http://myblog.theblogpress.com/feed/)
Don't forget to subscribe to your own email list so that you can see what your readers are seeing!
NOTE: RSS emails will not go out unless a new post has been published since the last send date. (this one gets me all the time so I thought I would share…)