WordPress.org

mnw gives users of an OMB service the possibility to subscribe to your blog directly. Your blog will automatically send OMB notices to subscribers when you publish a new post, page or attachment (configurable). You may as well post arbitrary OMB notices from the wordpress admin interface.

Moreover, mnw allows your blog to subscribe to a remote user and later on receive his messages. To subscribe to a user, enter the your blog‘s URL as your profile URL on the remote user‘s remote subscribe form.