SafeShip helps Plus stores save money by preventing delivery failures due to customers entering an invalid shipping address. With our checkout app blocks, you can easily add address validation or PO box blocking to your checkout in a few clicks. The app works in the checkout, so there's no need to have the customer update their shipping address after the order is placed. NOTE: You must be on Shopify Plus and have Checkout Extensibility enabled to use this app.

Validate shipping addresses and block checkout if the address doesn't exist.Prevent checkout with PO box addresses if you can't ship to them.Show shipping address suggestions to ensure optimal deliverability.Block shipping addresses that are missing a required house or building number.Validate both US and international shipping addresses in the checkout.