OG Zipcode Checker is a Shopify pincode and zipcode validator for delivery serviceability. Upload serviceable postal codes by CSV or manually, then show a storefront widget on product and cart pages so customers verify delivery availability, COD eligibility, estimated delivery days, and return windows before ordering. Block add-to-cart or checkout for unserviceable areas with a theme app extension - no theme code edits. Includes live widget preview, product tag targeting, and guided onboarding.

• Pincode and zipcode delivery checks on product and cart pages
• CSV bulk upload or manual entry for serviceable postal codes
• Block add-to-cart and cart checkout for unserviceable areas
• COD, estimated delivery, and return messaging by pincode
• Live interactive preview while customizing the storefront widget