How is Lob’s Address Verification API priced? Please click here for more information on Lob’s Address Verification API. Related articles If an address is unsuccessfully verified, does that count towards my monthly volume? Is your US Address Verification API CASS Certified? How is Lob’s Address Verification API priced? How does billing for Lob's Address Verification plans work? What if I send more verifications than the amount included in my plan?