About Address Verifier
Address Verifier is a shipping address validation app for Shopify stores. It checks every shipping address at checkout and again right after purchase, suggests the corrected version when something is off, and blocks the addresses that can't ship at all, like PO boxes when your carrier refuses them.
The focus is the United States and Canada. Addresses there are verified down to the delivery point, the exact apartment, suite, or unit, against USPS and Canada Post data. It's built for merchants who ship real parcels and eat the cost when one bounces: no code, no theme edits, no developer required.
Why this exists
A bad address is invisible until the parcel comes back. The order looked fine, the label printed, the box shipped. Then the carrier found the building but not the door, because the unit number was missing, and now you're paying a redelivery fee and writing an apology email. Most of these failures trace back to one small, catchable error: a missing apartment number, a typo in the street, a ZIP that does not match the city.
Checkout is the one moment the customer is still there and can fix it in five seconds. That's the moment Address Verifier works in.
How we work
We fail open. If our service is ever unreachable, the order still goes through. We'll never cost you a sale to save a parcel. The order gets flagged for review instead.
We verify to the delivery point. Confirming the street exists isn't enough. Apartment 4B has to exist too, so that's what we check.
We stay out of your way. Install from the Shopify App Store, toggle the rules you want, done. Validation runs in milliseconds and never blocks a customer who typed a clean address.
We charge per order, once. One order is one charge, no matter how many times the address gets re-checked. Pricing is on the homepage, in numbers, not in a sales call.
Where we are now
Address Verifier is live for Shopify stores, with the US and Canada verified to the delivery point. It's a young product, and we'd rather tell you that plainly than dress the site up as a company twice our size.
Who's behind it
Address Verifier is built by Marc Hendricks. It's an independent product: no growth team, no outsourced support inbox. The person who built the validation engine is the person who answers [email protected].
If you have a question, an edge case, or an address you think we'd get wrong, write in. Those emails shape the product.
Try it on your store.
Free plan included. Your first 100 orders get full verification free, no credit card.
Install on Shopify