The email newsletter service of this blog is powered by FeedBlitz and I'm a pretty happy customer. FeedBlitz's RSS newsletter service will continue to be free (supported by ads in the email newsletter) for all existing publishers.
SendMeRSS, RSS Forward and FeedBlitz are some popular blog-to-email services that let you read RSS feeds as email messages without requiring a news reader.
FeedBlitz Custom Domains - If someone considers subscribing to the email newsletter of this blog, he is taken to a page like feedblitz.com/f/f.fbz for confirming the mode of subscription - whether he wants to receive updates via email, twitter, Skype, Yahoo Messenger, etc.
Should you pick FeedBlitz or FeedBurner for providing RSS to Email service on your blog?
Monetize your RSS email newsletters with FeedBlitz Advertising program - you can also use it to monetize FeedBurner RSS feeds.