Michael Adams (mdawaffe)

Draft Notifier sends a notification email to your blog’s admin address when a post written by a Contributor is Submitted for Review.

Draft Notifier

Draft Notifier sends a notification email to your blog's admin address when a post written by a Contributor is Submitted for Review.

gtuk

The plugin adds a datetime box to your edit pages to set a unpublish date to posts, pages, and custom post types.
After you set a unpublish date the post will we updated at the given time and become a draft. 
The plugins works with posts, pages and custom post types

Gtuk unpublish posts

Adds the possibility to set an upublish date to pages, posts and custom post types.

Draft Notifier vs Gtuk unpublish posts