Checker Plus is a chrome extension which displays new email notifications. You can read, listen or delete an email without opening Gmail. Multiple Gmail accounts are supported.
Checker Plus Extension
Once you install the extension from Chrome Web Store. It will display an Email icon with any notifications if your browser has any Gmail sessions active.
Clicking on the notification icon will drop down a pop-up which will display all the recent emails. You can navigate through the emails very easily. If you focus out of the pop-up the window will close automatically. You can send emails by clicking on the pencil like icon which will open a compose window.
This is one of the most rated extension in the chrome web store. If you haven’t tried it yet, have a look, it can save you a lot of time.