Email Checker Plus Google Chrome Extension
An amazing Extension for your Chrome Browser!
The Checker Plus for Gmail extension can be found in the Chrome store here.
Once installed, it will add an extension to your Chrome Browser with a lot of great features.
One of the feature is the popup notification indicating that you have email.
There are many other great Google Chrome apps and extensions found in the Chrome store. Make sure you check them out!
This document is also in a Google Doc format. You can find that document here.
I also have some other Google Docs with lists of my favorite extensions and apps including this one!