Have you ever tried to extract all of your blog commentators emails and failed to do so? Then you came to right place for help. There is an awesome WordPress plugin named Export Emails– which allows you to export the email list of your blog subscribers and the email list of all the visitors who left comments on blog post. This plugin really helps to build a more sophisticated mailing list to communicate with the people interested in your blog.
First of all get the plugin and install it. After activating the plugin go to Tools->Export Email menu:
And here is the page where you can easily export your commentators email list: