This extension adds a panel to your Google Chrome™ that displays an optimised view of your Gmail™ account. You may need to enable the panel flags in Chrome before the panel will work for you. Gmail is a trademark of Google Inc. Use of this trademark is subject to Google Permissions. You need panels enabled in Chrome in order to get the most out of this extension, do it by: Type chrome://flags/ in the address bar and enable the panel option. Update: If you have some issues such as not being able to go back to the list of emails once inside an email, or being able to select your labels, then please disable your adblocker. It seems there is some issue with this and the Gmail site.
You can Follow the below Step By Step procedure to install the Panel Extension For Gmail Chrome Extension to your Chrome Web browser.
It is the Panel Extension For Gmail Chrome extension download link you can download and install Chrome Browser.