To get started using Gmail keyboard shortcuts, which are turned off by default, you need to turn them on through Gmail's ...

You can open Google Hangouts in Gmail to chat with others, but you will need to send an invite if the contact is not yet on Hangouts.

You won’t have to open a ‘your item has shipped’ email or click on a tracking link to find out the estimated delivery date You won’t have to open a ‘your item has shipped’ email or click on a tracking ...