baxeico

This plugin allows to mention WordPress users in a comment by writing usernames preceded by a character (default @), e.g. @guguweb. 
The mentioned users will receive a notification email with a link to the relevant post.
The mention character (default @) can be customized by a filter hook: <code>cum-mention-char</code>. Put the following code in your theme <code>functions.php</code> file:
<pre><code>add_filter( 'cum-mention-char', 'cum_custom_char' );
function cum_custom_char( $content ) {
 return '+';
}
</code></pre>
And the mention character will be +, so you can mention with +guguweb.
This plugin was inspired by <a href="https://wordpress.org/plugins/mention-comments-authors/" rel="ugc">Mention comment’s Authors by Wabeo</a>. Many thanks to the <a href="http://wabeo.fr" rel="nofollow ugc">author</a>!

Comments Users Mentions

Allows to mention Wordpress users in a comment. The mentioned users will receive a notification email.

NickDuncan

CodeCabin_

Jarryd Long

SolaPlugins

Nathan

This plugin will allow a user to be notified as soon as they are mentioned in a comment by prepending the @ symbol to their username. Setup the mentions in just a few clicks, as well as modify the notification email to your preference.

Comment Mention Notifications

This is simple to get setup, and works perfectly! I would definitely recommend this plugin if you would like comment notifications on your site. Keep up the good work!



Easy Setup - Great Plugin

Get notified by email as soon as you are mentioned in a comment.

Comments Users Mentions vs Comment Mention Notifications