
How to Use Postcode Rules to Prevent Out-of-Zone Delivery Dates on Shopify
Use postcode-based delivery rules to block or adjust available delivery dates on Shopify based on where customers are shipping to.
Jul 16, 2025
Why This Matters
Some postcodes require longer lead times (e.g. Highlands, Islands)
Others may not be serviceable at all (e.g. frozen food outside delivery zones)
Avoids refunds and failed deliveries
How to Set It Up
Create postcode logic rules in Flare
Match full or partial postcodes (e.g. SW1, IV, BT, etc.)
Assign zones like “UK Mainland”, “Highlands”, “Non-delivery”
Assign logic per zone
Block specific days or apply longer lead times
E.g. 3-day lead time for IV postcodes, block Saturday for BT addresses
Combine with shipping method or product-based rules
Frozen goods may only be sent to certain regions, and only with specific couriers
Test and preview logic
Use test addresses or simulate orders to confirm behavior
Set up postcode-based delivery rules → See how with Flare