Want to keep the discussion rolling in your blog comment system? Then use CommentMailer. When you reply your visitor's comment, this plugin automatically generates notification email into your visitor whom you are replying to. The email can be customized to contain only the notification or also contain the whole message as well.
This plugin support internationalization, so you can generate localized e-mail messages. And if you blog in several languages, the new feature--Localization on the fly--makes it easier to you to select the desired email language easily (without changing your blog's locale environment).
Help wanted to localize this plugin into several language. Visit the plugin homepage for more details.