Speedboxer

The Comment Approval Notification plugin will send an email to the comment author when you approve their comment. The email sent is fully customizable, with shortcodes, through a settings page.
Please note that this plugin has only been tested with PHP 5.2.x.
A full list of available shortcodes is available <a href="http://mattsblog.ca/plugins/comment-approval-notification/#shortcodes" title="Available Shortcodes" rel="nofollow ugc">here</a>.

Comment Approval Notification

Sends an email to the comment author when their comment gets approved (only if it's held for moderation).

Anass Rahou

Comment Limiter helps site owners control the length of comments submitted on their WordPress site.
With this plugin, you can define minimum and maximum character limits for comments, helping reduce low-effort comments, spam-like submissions, and overly long responses.
This is useful for blogs, communities, review sections, and any site where comment quality matters.Comment Limiter allows you to setup a limit of maximum and minimum characters allowed in each comment on your website posts, with the following features:
<ul>
<li>An extremely easy-to-use plugin.</li>
<li>Setup a maximum and minimum number of characters.</li>
<li>Enable or disable administrators to write a free comment, without restriction.</li>
<li>Extremely easy to delete. Don’t like the plugin? You can remove it, without leaving any trace.</li>
</ul>
Pull requests are welcome on <a href="https://github.com/ranss/comment-limiter" rel="nofollow ugc">Github</a>.
<h3></h3>
Tags: comment, length, limit, maximum, comment length, minimum comment, comment characters 
Requires at least: 6.0 
Tested up to: 6.6.2 
Requires PHP: 7.4 
Stable tag: 2.3.0 
License: GPLv2 or later 
License URI: http://www.gnu.org/licenses/gpl-2.0.html
<h3>Support</h3>
For questions, feature requests, and support concerning the Comment Limiter plugin, please refer to <a href="https://github.com/ranss/comment-limiter" rel="nofollow ugc">Github</a>.

Comment Limiter

Limit comment length by setting minimum and maximum character rules for WordPress comments.

Comment Approval Notification vs Comment Limiter