Sal Ferrarello

Stops outgoing emails sent from WordPress. This plugin stops 
outgoing emails generated by WordPress core, plugins, and themes. 
Emails sent using the <code>wp_mail()</code> function, will not be sent. 
In the case where an author does not use the recommended <code>wp_mail()</code> 
function and instead sends the email using another mechanism, an email will 
still be sent.
This plugin allows you to suspend sending emails when doing development work. 
Any calls to <code>wp_mail()</code> will fail silently. WordPress 
will operate as if the email were sent successfully 
but no email will actually be sent.
On the admin menu page Settings > Stop Emails, there is the option 
to log all emails to the PHP error log. By default this logging is 
disabled.
NOTE: If using the PHP <code>mail()</code> function directly, this 
plugin will NOT stop the emails.
Built by <a href="http://salferrarello.com/" rel="nofollow ugc">Sal Ferrarello</a> / <a href="http://twitter.com/salcode" rel="nofollow ugc">@salcode</a>

Stop Emails

Simply Works

This works great. I had used it months ago for something else. But I needed to migrate a Ning.com website with members into a new Buddypress site. I had to make sure the members were not emailed or pinged. This plugin stopped all outgoing emails to all the members.

Works Great!

Worked out of the box for me on a VPS; we were developing a system in parallel to an existing site and someone else installed this instead of using our existing process. I learned of a new plugin and a new way of doing things for WP. Very impressed.

Great turn-key solution

Excellent plugin! Easy, effective, bloatless.

Easy and Effective

Stop all outgoing emails sent from WordPress.

Jan Fabry

This is a tool to understand your rewrite rules (“Pretty Permalinks”). It is indispensable if you are adding or modifying rules and want to understand how they work (or why they don’t work).
It is only an analyzer, it does not change any rules for you. It parses the rules down to their components and shows the connection with the resulting query variables. It allows you to try out different URLs to see which rules will match and what the value of the different query variables will be (see screenshots).
This plugin was written as a tool to help answering questions about rewrite rules on <a href="http://wordpress.stackexchange.com/" rel="nofollow ugc">the WordPress Stack Exchange</a>.

Monkeyman Rewrite Analyzer

Throws a warning if WP_DEBUG is on, other than that still a very handy tool to check your rewrite rules.

Very useful

Helped me sort some issues with the rewrite rules when developing a plugin. Works fine with WordPress 5.2 and does what you need it too.

Works Great

This plugin is really useful for specific needs.
But unfortunately not maintained anymore... =/
If someone need and update version of this check this out :

https://wordpress.org/plugin/url-rewrite-analyzer

Features:

- Nice and clean interface
- Remove all PHP warning / notices
- Update code structure
- Compatible with latest WP Version
- Light / Old / Dark UI

Good plugins !

Making sense of the rewrite mess. Display and play with your rewrite rules.

Stop Emails vs Monkeyman Rewrite Analyzer