wphobby

Main Features:
<ol>
<li>List comment subscriptions email, post name, date.</li>
<li>Ban or Active the subscribers.</li>
<li>Modify email notification subject, body, footer by tags.</li>
<li>Modify email styles, include body background, text color and footer background.</li>
<li>Change the display text on the end of comment area.</li>
</ol>
More info:
<ul>
<li><a href="http://plugins.wp-coder.net/purchase/comment-notice/" rel="nofollow ugc">Leave a comment</a></li>
</ul>

Comment Notice

The main function of this plugin is to display a subscription option on the end of the comment area, so they can be noticed when there are new commen …

mywptrek

Subscribe your viewers to your calendar and inform them about your new events. 
Enable subscription to your events calendar. Inform your audience each time you create a new event.

Subscriber Addons for The Events Calendar

Subscriber Addons for The Events Calendar. Subscribe your viewers to your calendar and inform them about your new events through email.

Comment Notice vs Subscriber Addons for The Events Calendar