All articles
Elizabeth Parker
Elizabeth Parker writes about how verification works, deliverability statuses, missing unit numbers, and how to measure an address API's accuracy.
2 articles
Guide
How to Test an Address API's Accuracy
Build a truth set, damage it in controlled ways, and score five numbers: recovery, silent errors, flagged errors, empty results and refusal of fake addresses.
Educational
Complete Guide to Address Verification APIs in 2026
Master address verification with our comprehensive guide covering API selection, implementation, and best practices.