WordPress just updated their Jetpack plugin to allow native email publishing! In fact, this post is being published using the new feature.
The implementation is pretty robust, including the use of short-codes to add complexity and set options (i.e. post category, publishing delay, tags, etc.). There are several short-codes implemented. For instance, you can add a PollDaddy.com poll using short-codes. Pretty awesome!
I did notice a few short-codes that I think they missed, like the ability to set a featured image. You can include images, which will be posted inline (single image) or as a gallery (multiple images).
Overall, I think it is a great implementation. I am sure they’ll improve it.
Email publishing is not the only feature added to Jetpack. WordPress also added the ability to natively connect to social networks. For instance, this will allow you to post an excerpt on your Facebook page whenever you write a new blog post.
UPDATE: After emailing this post, I noticed that the category short-code did not take. Also, after reading more about the polls, I think that feature is currently limited to WordPress.com installs, not self-hosted unless you install the PollDaddy Plugin (I have not tested this).