Postal address verification allows senders to ensure their mail will be deliverable and that location is valid (addresses are valid if they are CASS-certified). This process ensures the highest possible ROI while helping mailers maintain their database's integrity over time. Lob's software provides address verification APIs, which verify each recipient's address and ensure proper formatting. Any address can be verified in a matter of seconds, and a Lob confidence score is given (e.g., 100% likelihood of being deliverable).

See: Lob's Address Verification