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).

Federico Andrioli

Auto approve comments by Commenter (email, name, url), User and Role (Akismet and wpDiscuz compatible).
Usage
<ol>
<li>Open Comments -> Auto Approve Comments</li>
<li>Go to Settings -> Discussion and check “Comment must be manually approved” </li>
<li>Optionally install and activate Akismet (comments flagged as SPAM will never get auto approved) </li>
<li>Configure your auto approval filters in “Commenters”, “Users” and “Roles”</li>
<li>Save and you’re done</li>
</ol>
From now on all the comments that match at least one of the configurations in “Commenters”, “Users” or “Roles” will always be auto approved.
Commenters – example
Add one Commenter per line, follow the example below:
<pre><code>tom@myface.com
tom@myface.com,Tom
tom@myface.com,www.myface.com
tom@myface.com,www.myface.com,Tom
tom@myface.com,Tom,www.myface.com
</code></pre>
Users – example
Add one Username per line, follow the example below:
<pre><code>steveknobs76
jeffmezos012
larrymage98
marktuckerberg2004
</code></pre>
Roles – example
Add one Role per line, follow the example below:
<pre><code>contributor
editor
yourcustomrole
subscriber
</code></pre>
Developers
Official Github repository: 
https://github.com/fedeandri/auto-approve-comments

Auto Approve Comments

Auto approve comments by Commenter (email, name, url), User and Role (Akismet and wpDiscuz compatible)

Comment Approval Notification vs Auto Approve Comments