SafeShip: Address Validator

Address validation at checkout to prevent delivery failures

by Checkout Plus · Launched: July 2023 · Free plan available.

1.0 (1) on Shopify Built for Shopify

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Prevent failed deliveries by validating and blocking invalid shipping addresses in the checkout.

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About SafeShip: Address Validator

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. Show more Show less

Last verified: July 17, 2026 · Fresh

App details

Developer: Checkout Plus
Category: Orders & shipping
Pricing: Free plan available
Launched: July 2023
Rating: 1.0 (1) on Shopify

Key features

**Shopify Plus required**
Free to test in the checkout editor
Free for shops on a development plan
Address validator
PO box blocker

Integrations with:

Checkout

3 plans · starts free

Development

Free

Starter

$10/month

Pro

$60/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 1 Shopify App Store reviews

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What a pile of trash, and I had to pay $10 to find out because the Free version is vaporware and only gives you a silly checkout editor simulation. Actual checkout is broken. Often messages boxes are hidden under other elements. It seems to block checkout by removing shipping methods, however, Checkout Extensibility keeps trying to add them back in, so you just see shipping rates calculated over a...

— Staging Shoe Palace

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