I will show you how to enable desktop notifications, so you will notice a new email, even if you are not in the window where you have your Gmail account open.
If you were wondering where in Gmail can you actually see all the contacts you have stored with the help of your Android phone or any other way, this is how you get to see them.
A really great Gmail functionallity that enables you to send emails from your other email addresses using your main Gmail account. Let's find out how to add other addresses to your account.