USPS Shipping

$39.00

Select Billing Option

1 Year

2 Years

Stop Guessing What a Box Costs to Ship

Live USPS rates at checkout — domestic and international, real flat-rate box fitting, multi-box orders priced the way they actually ship. The flat-rate table in your head retires today.

Domestic mail classes to choose from

International services quoted correctly

Fantasy permit-only rates ever quoted to a shopper

70lb

Real flat-rate container fit test, not a guess

What Your Checkout Gets

Every rate is asked for, not assumed. Here's what's under the hood.

Live Domestic Rates

Eleven mail classes — Ground Advantage, Priority, Priority Express, Parcel Select, Media Mail, Library Mail, Bound Printed Matter, and three Connect services. Offer exactly what fits your catalog.

International, Done Right

Fourteen international services, including Global Express Guaranteed for the orders that absolutely have to arrive fast. No more "email us for a shipping quote."

Never a Rate You Can't Buy

Permit-only, presorted, bulk-mailer pricing gets filtered out before it ever reaches your shopper. Every quote shown is a quote you can actually pay for.

Real Flat-Rate Fitting

Orders get test-fit into real flat-rate boxes and envelopes up to 70 lb before a price is offered. Scope it to Priority only, Express only, everything, or off.

Three Packing Modes

Per item, full box-packing against a custom library of your real boxes, or straight weight tiers. Pick the one that matches how you actually pack.

Multi-Box Orders, Handled

Orders that split across boxes get every box priced individually, only shared services shown, and real per-box costs summed. No more shrug math.

Delivery Time at Checkout

Estimated transit days shown before the click, straight from carrier service data. Your shopper knows when it lands before they buy.

Commercial or Retail Pricing

Show the rate you actually pay with your business account, not the walk-in counter price nobody with a shipping account pays.

Fast, Cached Checkout

The carrier handshake is cached instead of repeated on every quote request, so your checkout isn't stalling waiting on a fresh round trip.

Geozone Restriction

Only offer these rates where you actually want to ship this carrier. Everywhere else, it stays out of the way.

Handling Fee, Your Way

Flat or percentage, bake your packaging and labor cost into the rate automatically instead of hand-adjusting orders one at a time.

The Box You're Shipping Is the Price You Pay

Carrier pricing data quietly includes two prices for the same product name — one for a rectangular box, one for an envelope-shaped non-rectangular parcel — and the wrong one usually looks like the better deal. This engine keeps the price for the shape you're actually shipping.

No quoting envelope pricing on a box order
Correct shape, every single time, automatically
No manual double-checking required

Multi-Box Orders Stop Being a Guessing Game

When a cart splits across two, three, or more packages, this engine prices every box on its own, keeps only the services every box can actually ship on, and adds the real per-package costs together — not a single-parcel rate pretending to cover a whole shipment.

Every package priced individually
Only shared services shown to the shopper
Real totals, not stacked guesses

Flat-Rate Boxes That Actually Have to Fit

Flip on flat-rate mode and orders get test-fit into real flat-rate containers — up to 70 lb — before a price gets offered. Scope it to Priority only, Express only, everything, or leave it off entirely.

Actual fit test, not "probably fits"
Scoped to the services where it saves money
Cheapest container that genuinely holds the order

Real-World Use Cases

A used-book and vinyl reseller had been charging flat Priority-tier rates on everything because setting up the cheaper mail class correctly felt like more trouble than it was worth. Every paperback that ships at the right rate instead of the Priority rate is pure margin recovered, on every order, every day.

A clothing store's average order never fits in one box — a jacket, two pairs of boots, and a hat. For two years the owner manually split every multi-item order and charged a flat rate that was really just a guess in dollar form. Now the order splits itself, every box gets priced correctly, and only the valid shared services show up at checkout.

A specialty goods store gets the occasional urgent overseas order — a customer who needs it there in days, not weeks. Global Express used to mean an awkward "email us for a shipping quote" that killed most of the sales. Now it's a rate in the checkout list like anything else, and the sale closes on the spot.

A gift shop leans hard on flat-rate boxes every November and December, when the volume math only works if it's set up right. Orders get test-fit into real flat-rate containers instead of the owner's "this always sort of fits" spreadsheet column, so the busiest six weeks of the year stop being the six weeks margin quietly disappears.

Your Shipping Table Has Been Wrong This Whole Time

Every order that doesn't match your flat rate is money you're quietly giving away. Let the checkout ask the actual carrier instead of you asking your gut. Simple math.

Translated In The Following Languages

Arabic Unitag (ar-AA), Chinese, Traditional (zh-TW), Danish (da-DK), Dutch (nl-NL), English (en-GB), English, USA (en-US), Finnish (fi-FI), French (fr-FR), German (de-DE), Greek (el-GR), Hebrew (he-IL), Italian (it-IT), Japanese (ja-JP), Norwegian Bokmål (nb-NO), Persian Farsi (fa-IR), Polish (pl-PL), Portuguese, Brazil (pt-BR), Portuguese, Portugal (pt-PT), Russian (ru-RU), Spanish (es-ES), Swedish (sv-SE), Turkish (tr-TR)

License Information

An active license entitles you to updates, downloads, and support for the duration of the license period. You may continue using this plugin indefinitely without an active license; however, support, updates, and downloads will not be available while your license is inactive.