JordiPlana

This plugin hooks the normal WordPress workflow in order to determine if the request is processing will cause a 404 HTTP error. In that case it prevents WordPress to do any other processing and sends the user to the page defined in the plugin options.
A working and simple solution.
For more information about this plugin you can check <a href="http://jordiplana.com/404-simple-redirect-plugin-for-wordpress" title="404 Simple Redirect Plugin for WordPress" rel="nofollow ugc">the official page</a>.

404 Simple Redirect

This plugin hooks the normal Wordpress workflow in order to determine if the request is processing will cause a 404 HTTP error.

berkux

Effortlessly define and manage cron jobs with execution URLs and WP-Shortcodes. The plugin monitors cron jobs, retries failed executions as needed, and sends status updates via email.
With “Cron Setup and Monitor – Get URL Cron” you can: 
* Add, edit, and delete cron jobs to request HTTP URLs or WordPress shortcodes at defined times with various intervals. 
* Verify the retrieved result by checking for a required string or JSON field to ensure the HTTP URL or shortcode request was successful. 
* Retry the HTTP URL or shortcode request multiple times in case of failures. 
* Display all cron jobs in the WordPress installation, including those independent of this plugin. 
* Manually execute cron jobs. 
* Log requests and show OK or FAIL status: The first log entry records what should happen (“try”). The second log entry shows the success of the request. 
* Send emails for each HTTP URL or shortcode request, including the start of the attempt and the result of the request. 
* Option to send emails only on failure.
<h4>Usage</h4>
<ol>
<li>Go to ‘Basic Settings’ in the plugin menu to set basic settings (like E-Mailadress for Statusmessages) </li>
<li>Go to ‘Set CronJobs’ to manage the cron events: Set URL or WordPress-Shortcode, interval, startdate etc.</li>
<li>Store the defined CronJobs</li>
<li>Manually execute a Cronjob by clicking on “execute job”</li>
<li>Check plugin-menu ‘Show CronJobs’: There the scheduled CronJobs “geturlcron_event-” should be listed </li>
<li>Check plugin-menu ‘Show Logs’: There should be at least one entry for the “try”. And if the CronJob has been finished a entry for the result (“FAIL” or “OK”)</li>
<li>If a E-Mailadress is defined, two E-Mails are sent for trying and result.</li>
</ol>

Cron Setup and Monitor – Get URL Cron

Manage cron jobs, monitor tasks, retry failures, and send email updates

404 Simple Redirect vs Cron Setup and Monitor – Get URL Cron