BREAKING: USPS slashes address verification to 60 addresses/hour. What now?
Smarty

SmartyKey® now in US Address Verification and why that rocks

SmartyKey® glowing inside a house representing address verification
Updated November 10, 2025
Tags
SmartyKey® glowing inside a house representing address verification

Up until now, SmartyKey®, a persistent unique identifier for all 210+ million addresses in Smarty’s database, has only been available to customers who purchased US Master Address List or geocoding products. We’re happy to announce that, as of today, it's also available at no extra cost with US Address Verification. Yippee!

But … what is SmartyKey?

SmartyKey is the persistent, unique identifier of your dreams. It remains constant through address changes and is available for USPS and non-USPS addresses. 

It’s an incredible tool that improves data hygiene and management processes by providing a historical view of the same location over time. Alias locations will become more evident, and the deduplication process will be more straightforward because SmartyKey tracks changes to an address at any address over time. 

Enriching your addresses is snappier now. Datapoints such as roof type, square footage, tax jurisdiction, sale amount, lot size, and more are also bonuses within reach while using SmartyKey in your US address verification adventures. This tool is truly a game-changer in data management and enrichment.

It’s also an absolute must for any organization looking at data blending, as records are speedily matched with ease and accuracy. Say goodbye to address and reporting confusion. Say hello to SmartyKey.

SmartyKey spiffiness 

There are mind-melting features associated with SmartyKey:

Huge database

Efficient format

Fast processing

Superior accuracy

Simple link to additional data

But … do I have to pay more now?

NOPE! Existing customers are now automatically receiving SmartyKey in their verification results at no extra cost and with no additional fuss. We’re just grandfathering you guys in. You don't need to do anything except sit back and enjoy the new benefits that SmartyKey offers in every verification result!

Have any questions that we didn’t cover? Here’s a list of FAQs about the superpowers behind SmartyKey.

Subscribe to our blog!
Learn more about RSS feeds here.
Read our recent posts
Accessibility best practices at Smarty
Arrow Icon
An enterprise-level customer of Smarty’s recently shared how impressed they were with our accessibility-first approach, inquiring about how we designed our tools to function in a way that feels equitable and usable for everyone. At Smarty, one of our core values is outwardness — seeing people as people, not objects or caricatures. Every person who interacts with our tools has their own needs, wants, and objectives, and accessibility is one of the most meaningful ways we connect with people - an area we’re striving to improve.
Introducing Smarty’s mascot… Hermes?
Arrow Icon
Greek gods, as it turns out, have a lot to say to the mortals on Earth and the souls in Hades. What they don’t have is time to travel from Olympus all the way to Earth or Hades just to tell a mere mortal to perform 12 labors… or eat a magical herb… or free Odysseus. That’s why the gods have a personal messenger: Hermes. Equipped with winged sandals, Hermes travels between Olympus, Earth, and the underworld with lightning speed (Get it? Lightning? Because his dad is Zeus? 🤣)Smarty also knows a thing or two about outrageous speed, and that’s not where our similarities with Hermes end.
How to build and validate address lists for direct mail marketing
Arrow Icon
Looking to build a direct mail marketing campaign? You’ve come to the right spot. Before you can send marketing mail like a pro, you’ll need to build a list of verified addresses. Otherwise, frequent misdeliveries and costly redeliveries can take the wind right out of your campaign’s sails. On top of that, a bad address list could lead you to miss out on mind-blowing postal discounts. 😱Don’t let bad addresses capsize your campaign. With a US Master Address List of over 210 million verified addresses—available by state, county, or nationwide—and shipshape US Address Verification, you can construct new lists or clean active ones with the swagger of a seasoned captain.

Ready to get started?