Google, meanwhile, in a playful jab at Microsoft's not-yet-released Windows Blue operating system, also unveiled Gmail Blue. The email service is a redesigned version of Gmail basically just built around the color blue.
"It's Gmail, only bluer," Google project manager Richard Pargo said in a fake promo video.
"In trying to bring email into the 21st century, we are faced with the challenge, how do we completely redesign and recreate something while keeping it exactly the same?" he said.