DanCoulter

With a quick activation, you can receive a daily email if you have any plugins that need updating. If no plugins have pending updates, you will not receive an email at all. If you don’t upgrade, the plugin will keep nagging you until you run the updates.

Plugin Update Notification

Receive a daily email if you have any plugins that require updating.

Stefano Lissa

Comment Notifier lets user to subscribe the comment thread of each single post of your blog. It improves traffic and loyalty.
Notification emails are fully customizable (both plain text or html) with a number of “tags” to insert author name, post link and title, receiver name and so on.
The “subscribe me” checkbox in the comment form area can be added automatically or manually.
Read more on <a href="http://www.satollo.net/plugins/comment-notifier" rel="nofollow ugc">Comment Notifier</a> offical page.
<h4>Other plugins</h4>
<ul>
<li><a href="https://www.satollo.net/plugins/hyper-cache" rel="nofollow ugc">Hyper Cache</a></li>
<li><a href="https://www.thenewsletterplugin.com" rel="nofollow ugc">Newsletter</a></li>
<li><a href="https://www.satollo.net/plugins/header-footer" rel="nofollow ugc">Header and Footer</a></li>
<li><a href="https://www.satollo.net/plugins/thumbnails" rel="nofollow ugc">Thumbnails</a></li>
<li><a href="https://www.satollo.net/plugins/include-me" rel="nofollow ugc">Include Me</a></li>
</ul>

Comment Notifier

Add the new comment subscription option to the blog comment form.

Plugin Update Notification vs Comment Notifier