CartBlock Blog

How to Block Disposable Email Addresses at Shopify Checkout

Block disposable email at Shopify checkout with CartBlock. Build a reviewed domain list, avoid fa...

09/23/2026

How to Make Shopify Require a House Number at Checkout

Make Shopify require a house number at checkout. Set an Address Line 1 rule in CartBlock, handle ...

09/22/2026

How to Validate Phone Number Formats at Shopify Checkout

Set up Shopify checkout phone number validation with CartBlock. Block known placeholders, avoid f...

09/21/2026

How to Require a Phone Number at Shopify Checkout

Require a phone number at Shopify checkout, understand presence versus format and ownership, and ...

09/18/2026

How to Restrict Shopify Products by State or Province

Learn how to restrict Shopify products by state or province, combine verified product and region ...

09/17/2026

How to Sell Products Only in Multiples on Shopify

Learn how to sell Shopify products only in multiples for case packs or wholesale cartons, with ch...

09/16/2026

How to Set a Maximum Order Value in Shopify

Learn how to set a maximum Shopify order value, choose the right threshold and scope, write a hel...

09/15/2026

How to Block Shopify Orders by ZIP Code or Postal Code

Learn how to block Shopify orders by ZIP code or postal code, avoid broad matches, write clear er...

09/14/2026

How to Separate Pre-Order and In-Stock Items into Different Shopify Orders

Separate pre-order and in-stock items into different Shopify orders with clear catalog rules, car...

09/12/2026

Shopify Checkout Error Messages: How to Write Clear Validation Messages

Write clear Shopify checkout validation messages that explain the problem and the fix. Use practi...

09/11/2026

How to Require a Product to Be Purchased by Itself on Shopify

Require a Shopify product to be purchased by itself. Learn cart-exclusivity logic, CartBlock setu...

09/10/2026

How to Restrict Local Pickup or Delivery by Product on Shopify

Learn how to restrict Shopify local pickup or delivery by product. Map eligible items, configure ...

09/09/2026