leo108

When someone reply a comment, the person who receive this reply will receive a mail. 
当有人回复评论时，被回复的人会收到一封提醒邮件。

Comment Reply Notifier

When someone reply a comment,the person who receive the reply will receive a mail 有人回复评论时，被回复的人会收到一封提醒邮件

Yakup Hoca

The visitors send their questions in comments, then they leaves our web sites. When we reply their comment to answer their questions, this plugin sends an e-mail about this. So that, the visitor will learn this situation and return to our site to read our answer.
For support: <a href="http://www.yakuphoca.com/comment-reply-by-admins-notifier-plugin/" title="Support by Yakup Hoca" rel="nofollow ugc">Plugin URI</a>

Comment Reply by Admins Notifier

This plugin sends an e-mail notify when an admin or an editor of site reply a comment.

Comment Reply Notifier vs Comment Reply by Admins Notifier