Email Extractor is a free Chrome add-on developed by braingainsoft - sociallist.io. This handy tool allows users to easily extract valid email addresses from the web pages they visit.

To use Email Extractor, simply right-click on the extension icon to open the options window. From there, you can choose the execution mode and the resulting list options.

There are two execution modes available. The default mode, called "once", collects all emails from the active tab and copies them to the clipboard when the extension icon is clicked. The second mode, called "background", continuously collects emails from the web pages the user visits. Clicking the extension icon again will copy all collected emails to the clipboard and stop the collection process.

In both modes, duplicate emails are automatically collapsed into one. The extension icon also provides a tooltip with the current mode, and an indicator displays the number of emails collected - black while collecting data and red when the collection is complete.

With Email Extractor, users can easily gather valid email addresses from web pages, making it a valuable tool for various purposes.