Address entered transformed to validated address

Most accurate & fastest address verification

Smarty is simply the best solution for USPS and International Address Validation. From our APIs, to our list-processing tools, we have an address validation solution for you.

Smarty products
us address verification
Address Verification
Validate and standardize addresses for 240+ countries and territories around the globe with lightning-fast processing speeds.
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Address Autocomplete
Improve form completion rates and create a better user experience by quickly suggesting properly formatted addresses for more than 130 countries.
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Effortlessly convert addresses into hyper-accurate latitude and longitude coordinates, and vice versa, at mind-blowing speeds.
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Address Enrichment
Access over 350 property attributes, including structural, locational, and financial information.

Easy, fast, reliable

Our simple API documentation and fantastic customer support make it easy to start validating addresses in just a few minutes.

Get rolling in minutes

No credit card required. Get 1,000 free lookups. Try out the full demo before signing up.

100% up-time

Our service averages (drumroll please)…100% up-time!

Every address on the planet

From Tokyo to Toronto and everywhere in between. Verify addresses with our USPS and International address validation APIs.

Customer-loving support

Talk with real people who love helping you.

Ridiculously good documentation

Comprehensive and easy-to-digest documentation. From our address validation APIs to our List Processing Tools, every detail you need is right here.

Guaranteed data security

24 hour monitoring, encryption, and hashed. And we swallowed the key.

Transparent pricing

Simple pricing. No setup fees, commitments, or gimmicks.

Really fast

There's fast and then there's Smarty fast. Our service averages sub-30 millisecond response time.

Our results

You don't have to take our word for it. The numbers speak for themselves.
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What our customers are saying
A woman in blue activewear seated and posing, and a man in a light green shirt and yellow shorts jumping beside her, both in a peach-colored room.
We evaluated quite a few providers, and felt that Smarty was the right partner for us, given their user-friendly approach and robust support. It checked all of our boxes.
Mel CummingsVP, Product Management & UX, Fabletics
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