Admin Msg Board is a plugin for WordPress that will add a messaging system in your WordPress admin area. This works for weblogs that are written by more than one blogger, so they can communicate with each other, without leaving the WP system.
Messages can have up to 140 words like in twitter, and you can choose whether to write to all users or select recipients
- Download the plugin
- Uncompress and upload to the folder wp-content/plugins/ (wp-content/plugins/admin-msg-board/)
- Activate the plugin.