Address problems are one of the most frustrating and expensive issues in ecommerce fulfilment. A customer types their postcode wrong, the package bounces back, and you’re out the shipping cost — sometimes twice.
Validate Addresses in Real Time
The TheForge EasyPost Shipping plugin validates customer addresses against the EasyPost address verification service as they type at checkout. A green tick means the address is deliverable. A warning means there’s a problem — before the order is ever placed.
Warn or Block
You choose the behaviour. Set it to warn only — the customer sees a warning but can still check out. Or set it to block checkout — no order goes through with an unverifiable address. Particularly useful for high-value orders where a failed delivery would be costly.
No Extra Plugins Required
Address validation is built directly into the EasyPost plugin — no separate extension, no extra subscription, no third-party service to configure. It works with EasyPost’s existing verification API.
USPS Address Standardisation
For US addresses, EasyPost normalises the address to USPS standards — correcting apartment formats, adding missing ZIP+4 codes and standardising state abbreviations. The cleaned address is what goes on the label.