Folks I have released my first WP Plugin named 'Contact Commenters' that provides very good filtered views of who are your active commenters, new commenters, inactive ones etc. Then these commenters can be contacted via email. This plugin can also be used to contact all your commenters to inform about new services or to send greetings to them etc. Check out the plugin for yourself. http://wordpress.org/extend/plugins/contact-commenters/ Please provide your feedback!