We all have timeless posts on our site that don’t get enough views as years go by. Renewing thousands of old posts manually takes a lot of work. WP Auto Republish is a handy plugin that revives old posts by resetting the published date to the current date. That means these posts are moved to your front page, so more people can see them.
This plugin helps your new visitors discover older posts. It moves them to your front page and the top of your RSS feed. WP Auto Republish is pretty flexible. It lets you include/exclude posts by category/tags, set republish and randomness intervals, and auto purge cache. WP Auto Republish is available as a free download. More info is available here.