If you are using Blogger.com, go to Settings - Comments - and type your rss open email address in the field called "Comment Notification Address". Or create a google group for the purpose and add email@example.com email address. Each public google group apart from archiving posts, publish a number of feeds to choose from like RSS, Atom (15 or 50 messages).
So you can repost your comments in your own little Google Group and then offer the feed as a comment feed. I wonder if it formats more neatly than the mailbucket method? If you try it, let me know how it works for you.
Filed in: comment-feed, feeds, blogger-hacks