Two products. One margin loop.
Know what shipping costs you. Before, and after.
PackOS makes two shipping tools. One quotes the real rate at your Shopify checkout, using the real box. One buys discounted labels for any store, on any platform. Run either. Run both and see the margin on every order.
- PackOS Checkout
- 14-day free trial on every plan
- PackOS Labels
- Free, always
One order · Two numbers · One difference
Quoted at checkout
What the customer paid you to ship it
PackOS Checkout
Paid for the label
What the carrier charged you to move it
PackOS Labels
Margin
The difference, recorded on every order
Both products, on the same record
Run either product on its own. Run both and the same order carries both numbers.
The problem
Merchants are flying blind on shipping costs
| Checkout rates that don't match what you actually payPackOS calculates rates using your exact box dimensions, so what customers see at checkout is what the carrier actually charges you. |
|---|
| No idea if you're making or losing money on shippingBecause PackOS is present at both checkout and label purchase, it shows you the margin on every single order — automatically. |
| Label tools that are either too simple or too complexRate shop across all carriers, print batches of labels, automate your shipping rules — without hiring a logistics team to run it. |
How PackOS Checkout works
From install to accurate rates in three steps
- 01
Add PackOS Checkout to your store
PackOS Checkout installs in minutes and registers as a carrier service on your Shopify store. It gets access to your product dimensions and starts returning accurate shipping rates at your next checkout.
- 02
Configure your box library
Enter your box dimensions. PackOS Checkout uses bin-packing to select the box each order will actually ship in, then fetches real-time USPS, UPS, and FedEx rates for that box.
- 03
Rates appear automatically at checkout
USPS, UPS, and FedEx rates are calculated in real time and shown to your customer before they pay. Buy the label through PackOS Labels and the same order carries both numbers — what you charged and what you paid.
Two products
Use either one. Use both and nothing is hidden.
The differentiator
One system holds both numbers on the same order
Shipping margin needs two figures: what the customer paid, and what the label cost. Rate apps only ever see the first. Label tools only ever see the second. Run PackOS Checkout and PackOS Labels together and one system records both on every order — no exports, no matching, no spreadsheet.
See how the loop closes →PackOS Checkout · At checkout
Pick the box first. Then quote the rate.
A 3D bin-packing engine tests every box in your own library against the cart, picks the one the order will actually ship in, and asks USPS, UPS and FedEx for a rate on that box. Shopify today; WooCommerce and other platforms coming soon.
See PackOS Checkout →PackOS Labels · At the label
Discounted labels for any store — and the margin on each one
Connect Shopify or WooCommerce, import a CSV, or type a shipment by hand. Rate shop USPS, UPS, FedEx, DHL and Canada Post, buy one label or fifty, void with carrier-confirmed refunds, and see what every label did to your margin. No Shopify required. Free, always.
See PackOS Labels →What PackOS customers save on shipping
Monthly shipping savings reported by PackOS customers. Results vary with order volume, product mix, and carrier rates.
Works with the platforms and carriers you already use
- Shopify
- WooCommerce
- UPS
- USPS
- FedEx
- DHL
Pricing
Two products. Two prices. Never one bundle.
Neither product requires the other, and neither one is sold as an add-on to the other.
PackOS Checkout
from $50/mo
Billed through Shopify. A 14-day free trial on every plan, and 10% off when you pay annually.
- Real 3D bin-packing across your own box library
- Live USPS, UPS, and FedEx rates at checkout
- Split shipment logic on oversized orders
- Per-order margin history from the first day
PackOS Labels
Free, always
No subscription and no markup on postage. You pay the carrier price shown for each label.
- Rate shop USPS, UPS, FedEx, DHL, and Canada Post
- Buy one label or a batch, print on any thermal or desktop printer
- Void with carrier-confirmed refunds back to your wallet
- Margin on every label
Find out what shipping is really costing you.
PackOS Checkout quotes the real rate at your Shopify checkout. PackOS Labels buys discounted labels for any store and shows the margin on each one. Start with either.
- 14-day free trial on every Checkout plan
- Labels is free, always