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U.S. Postal Service

The Voice Stamp

If you want to mail a letter, just say so

Blue postal service mailbox with package on top and Voice Stamp logo

To send mail anywhere in the country, you still need a physical postage stamp. With the U.S. Postal Service, we created the easiest possible way to mail a letter: with your voice.

We turned USPS collection boxes into post office outposts. With the help of AI, you can now send mail without a physical stamp. 

To go beyond in-person transactions and into voice authentication is a bold new move for the USPS, proving its services go way beyond the post office.

— Emmeli Osterdahl, Creative

Man using Voice Stamp service at mailbox

A voice-activated device with artificial intelligence and an Internet connection — designed to fit every U.S. Postal Service collection box in the country. 

Your unique voice becomes a unique stamp.

We invented a whole new way to send mail — without the friction of looking for physical stamps or a post office. 

By connecting voice authentication to existing USPS logistics and technology, we created 150,000 easily accessible points of sale for the U.S. Postal Service: the blue collection boxes.  

We matched return addresses to users’ payment methods — charging postage only when mail is scanned at processing centers. All of this is activated by the user’s voice. 

Woman on busy street using Voice Stamp service at mailbox Woman on busy street using Voice Stamp service at mailbox Woman on busy street using Voice Stamp service at mailbox

Let's talk about possibilities

The smart Blue Box and the Voice Stamp service is a patented prototype currently in testing in select locations. We continue to conduct research and collect data with the goal to put it into market in the very near future: empowering over 150,000 blue collection boxes with AI.