Google has been making it easier for more and more third-party companies to take advantage of its products' features recently. For instance, it's now taking airlines, restaurants and event venues (among others) by the hand, showing them how to use the new Inbox app's Highlights feature to their advantage. Like its name implies, "Highlights" finds pertinent info or actionable items within an email and shows them right within the email list. So, if you're eating out or prepping for a flight, you can confirm your reservation or check in without having to access the email itself. Devs simply need to mark up the parts they want to surface to make that happen -- we doubt they'll have a tough time doing so, since Google even offers full sets of instructions and sample codes they can look at. Just recently, the tech giant also made it simpler for devs to add the "OK Google" voice command to their creations, letting you do queries within an app without lifting a finger.