Mark-k

Once a day wordpress deletes all trashed items which had been in the trash for more then N days, where N stands for the value of EMPTY_TRASH_DAYS constant which may be defined in wp-config.php file.
This plugin presents a different way to control the number of trashed days. Instead of manually editing wp-config.php which is usually not convenient and somewhat dangerous, you can set the number of days in a settings page. 
In addition there is a tool to empty the cache from Items older the a specified number of days.
Usage: 
Get to the settings page via the menu “Options” >> “Empty trash” 
Get to the delete trash tool page via the menu “Tools” >> “Empty trash”
Network considerations: 
The plugin was not tested in a network installation, but it should work gibing the individual site admin a control over his trash which is possibly different then other sites on the network. 
The plugin do not have network wide settings
Important: 
For better or worse the plugin employs exactly the same deleting algorithm used by the wordpress version running the site.
Limitations: 
The plugin will not be able to function well if you have EMPTY_TRASH_DAYS set in your wp-confing.php

Trash emptier

Provides a configurable control over the trash emptying algorithm wordpress uses without changing wp-config.php

skldrth

Content Unpublisher lets you schedule a date and time for posts or pages to automatically: 
– Be moved to the Trash, or 
– Be converted back to a draft
Perfect for time-sensitive content such as promotions, events, announcements, or temporary landing pages.
Features: 
– Set a future unpublish date and action per post/page 
– Choose to trash or unpublish to draft 
– Admin overview table of all scheduled actions 
– AJAX-powered remove buttons (no reloads) 
– Lightweight and clean – no custom database tables
<h3>License</h3>
This plugin is licensed under the GPLv2 or later.

Content Unpublisher


An easy to use plugin for a function that maybe should be a native WordPress -function.


Great plugin

A lightweight plugin to automatically unpublish or trash posts and pages at a scheduled time.

Trash emptier vs Content Unpublisher