TIEro

This plugin is now part of the free plugin <a href="https://wordpress.org/plugins/tietools-automatic-maintenance-kit/" title="TIEtools" rel="ugc">TIEtools</a>, which also includes duplicate post control and server log file removal.
Simple post expiration plugin. Expires posts based on a variety of criteria, including category and post status options.
<ul>
<li>Expires published, draft, pending and private posts on demand.</li>
<li>Includes or excludes user-defined list of categories.</li>
<li>Moves all expired posts to the Trash.</li>
<li>Notifies post author, site admin and others of post expiry on demand.</li>
<li>Permanent post deletion is handled by WP’s built-in Trash removal.</li>
<li>Completely automated by wp-cron once options are set.</li>
</ul>
Currently, the plugin offers four cumulative expiration methods:
<ol>
<li>Expire posts based on their age (e.g. expire posts created more than 90 days ago).</li>
<li>Retain a given number of posts and expire all others (e.g. keep the latest 1,500 posts).</li>
<li>Detect the BAW Post Views Count plugin and expire posts based on a combination of post age and number of views (e.g. expire all posts over 45 days old which have fewer than 100 views).</li>
<li>Detect the WTI Like Post plugin and expire posts based on a combination of post age and total number of likes (e.g. expire all posts over 90 days old which have fewer than 10 likes).</li>
</ol>
Each expiration check is run separately and in the order listed above, so you can build quite complex expiration structures to catch a variety of criteria.
Post status choices apply to all expiration methods. The user-defined category filters can be switched on or off for each method.

TIEexpire Automated Post Expiry

Expires posts based on multiple criteria, with category and post status options. Sends notifications to users and admin on demand.

Tips and Tricks HQ

This plugin offers a few lightweight features to speed up your WordPress site without much hassle.
<h4>Far Future Expiry</h4>
When the feature is enabled, this plugin will modify your .htaccess file by inserting code which will add expires headers for common static file types.
Expiry header specifies a time far enough in the future so that browsers won’t try to re-fetch images, CSS, javascript etc files that haven’t changed (this reduces the number of HTTP requests) and hence the performance improvement on subsequent page views.
<h4>Gzip Compression</h4>
You can also enable Gzip compression on your site using this plugin. Gzip compression will speed up your WordPress site by compressing the page output and sending it to your visitors browser.
When enabled, the plugin will do gzip compression if the visitor’s browser can handle it.
This feature may conflict with a few other plugins. So disable this feature if you need to use a plugin which doesn’t work with gzip compression.
<h3>Usage</h3>
To use this plugin do the following:
1) Ensure that the “mod_expires” module is enabled from your host’s main configuration file
2) Check with your hosting provider or if you have access to the httpd.conf file the following line should be uncommented: 
LoadModule expires_module modules/mod_expires.so
3) Enable the “Far Future Expiration” checkbox
4) Set the number of days till expiry
5) Select the file types you wish to enable the “far future expiration” feature for by using the checkboxes in the “File Types” section
NOTE: When you use this plugin, the file selected file types are cached in the browser until they expire. Therefore you should not use this on files that change frequently.
More details can be found on the <a href="https://www.tipsandtricks-hq.com/wordpress-far-future-expiration-plugin-5980" rel="nofollow ugc">plugin’s documentation page</a>

Far Future Expiry Header

This plugin will add a far future expiry header for various file types to improve page load speed of your site

TIEexpire Automated Post Expiry vs Far Future Expiry Header