Gmail is pretty powerful, but Google engineers never seem to be satisfied with what ain't broke.
Experimental Chrome Features
The Ultimate Gmail Guide
How to Schedule Your Emails
Gmail Labs have been around for a while to soupe up your Gmail -- and other Google products -- by offering bite-sized projects that Googlers are working on before an official release date.
Many Google Labs projects, like Gmail Googles, are wacky, but another set of them have become mainstays, helping us to become a lot more productive when using our primary email accounts.
In order to turn on any of the following Labs features, click the cog button in the top right corner of Gmail, then click Labs.