Custom shipping rates at your Shopify checkout — carriers, zones, weight tiers and delivery sets.

What it does

Carriers, zones & surcharges

Model each carrier’s postcode coverage, add per-area surcharges for remote regions, and override the checkout label where a zone needs it — all without a separate rate table.

Weight tiers & delivery sets

Weight-tiered services with free-over-threshold pricing, plus delivery sets that combine a multi-parcel basket into one clean checkout line instead of stacking charges.

Your codes, your rates only

Return your own carrier and service codes downstream, and optionally show only your rates at checkout — non-destructively, without deleting your existing shipping settings.

Our other apps

All apps by Portside Commerce →

Delivery Messaging

Free plan available

Live, product-aware delivery information for your storefront — delivery times, free-delivery progress and order ETAs.

View on Shopify App Store →

Hybrid Wholesale

B2B wholesale on your existing store — tiered pricing, applications, approvals and a fast bulk order form.

View on Shopify App Store →

Redirects Easily

Free plan available

Automatic 301 redirects when you archive or delete products, so old URLs keep working.

View on Shopify App Store →