From Mashable:

Posterous is the super simple blogging platform that doesn’t require an account, and makes sharing anything on the Web or via email impossibly easy.

Now, the company is releasing a feature that turns group blogging into something you can manage right from your inbox. Whether you have an email list or group blog that is for private, public, or for the family, you can now not only post to Posterous via email, but also get instant notifications and add comments without ever leaving your inbox.

See full story at:

Posterous Turns Email Lists Into Group Blogs.