Inbox by Gmail isn't even yet a year old, but Google is trying to improve mail even further. But this time, it's not working with the digital variety. It's doing something about snail mail.

And frankly, it's about time. People have been sticking envelopes in mailboxes for a century or two, and the experience hasn't changed all that much. Our mailboxes could be better. They could be smarter.

They could be the Smartbox.

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