In talking with publishers who are using WordPress as a full CMS for their sites, many folks are eager to enhance the “Submit for Review” feature for Contributors to include email notifications.
Peter Keung of Mugo Web, has created two Open Source GPL plugins that provide this enhanced functionality.
The first is Peter’s Collaboration E-mails:
This plugin enables automatic e-mails to the relevant users at the different post status transitions: when posts are pending; when they are approved or scheduled; and when their statuses are changed from “pending” back to “draft”.
The second one is often used in conjunction to append relevant notes, called Peter’s Post Notes:
Add notes on the “edit post” and “edit page” screens’ sidebars in WordPress 2.7 and up. When used with Peter’s Collaboration E-mails 1.2 and up, the notes are sent along with the e-mails in the collaboration workflow. There is also a general and private notes system on the dashboard.