Promote Your Blogs by Sending Out an E-Mail Newsletter
You can create this kind of newsletter in several ways, but it’s most effective for you to sign up for an e-mail service provider like Constant Contact, Topica, or Email Labs. These services can handle subscription requests, unsubscribe requests, and change of e-mail addresses, all without your needing to do anything. In addition, most of them offer you the ability to track clicks-through on links in your newsletters and track who you e-mail and when.
There are a few free mailing list options out there, but most of them involve a monthly fee. Shop around to find one that fits your price range.