Blog
Field notes on address validation, property data, and lead qualification from the team building the API, most with code you can run.
The State of Address Data
What 500,000 real address lookups reveal about lead quality: 18.9% of deliverable addresses are not single-family homes.
Read the reportReal-Time Address Verification API: A Practical Guide
A practical guide to real-time address verification with a REST API: validate a US address, classify the property, and return an estimated home value in one call, with runnable code.
Read →How to Score and Qualify Leads by Estimated Home Value
Use estimated home value from an address API to score and prioritize leads. A practical guide to turning property value into a lead score, with runnable code.
Read →How to Clean a Marketing List of Invalid and Non-Residential Addresses
Clean a marketing or mailing list by removing invalid, PO box, and non-residential addresses with an API. A step-by-step guide with runnable Python.
Read →Address Verification API: The Complete Guide
A practical guide to address verification APIs: what they actually return, where they quietly differ, how to choose one for your workflow, and how to wire it up, with runnable code.
Read →Smarty vs Melissa vs AddressVerify: Choosing an Address API
Smarty vs Melissa vs AddressVerify: an honest address verification API comparison. Match the tool to the question you are actually asking, with a decision framework and runnable code.
Read →USPS Web Tools API Alternatives for Address Validation
Looking for a USPS Web Tools API alternative? Compare your options for real-time address validation and see how to migrate, with runnable code.
Read →How to Filter PO Boxes and Non-Residential Addresses From Your Leads
Filter PO boxes and non-residential addresses out of a lead list with an API. A step-by-step guide with runnable JavaScript and Python.
Read →How to Classify Property Type From an Address (API Guide)
Classify the property type from an address with one API call. See all seven home types, expanded property data, and runnable code.
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