Responding to an invitation or checking in for a flight soon won't require any typing at all, assuming you're using Gmail to manage your inbox. When the situation calls for it, new quick action buttons will pop up in an email, letting you accomplish simple tasks without reaching for the keyboard. For event RSVPs, you can even mark your attendance from the main inbox view -- a preview with all the key details will pop up, letting you respond with a simple Yes, Maybe or No. On the air travel front, flight confirmation emails will now display your flight status in real time, along with a check-in box, which will boot you directly over to the carrier's site. As you've probably guessed, Google will be rolling out these new features gradually, so if they haven't already appeared in your browser, you're certainly not alone.