Multi-carrier shipping software for marketplace sellers: rate shopping, Buy Shipping, one-click labels

Marketplace shipping software built into the order: live rates from the four carriers your customers actually use, native Amazon Buy Shipping and Walmart Buy Shipping, one-click labels, and bulk print for the days orders come in waves.

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The spreadsheet problem

A separate shipping tool means a third login, a third bill, and seams where money leaks: the wrong carrier picked because the cheapest one wasn't shown, an Amazon order shipped with a third-party label and a defect mark filed against the account, a bulk-print mode that crashes past 80 orders. Individually small, these add up to the difference between a 12-point margin and an 8-point margin.

What Rilk does

Shipping is built in. Every order has a shipping step that compares live rates across UPS, FedEx, USPS, and DHL — plus native Amazon Buy Shipping and Walmart Buy Shipping for orders on those channels — and lets you print a label with one click. You bring your own carrier credentials; the marketplace channels need no carrier account at all.

Live rate shopping across UPS, FedEx, USPS, and DHL — price, transit time, and service level side by side

Native Amazon Buy Shipping — keeps valid-tracking metrics clean, often cheaper than your own rates

Native Walmart Buy Shipping with the same benefits on Walmart-side orders

One-click label printing to any connected label printer

Bulk-print mode for batches

Bring your own carrier accounts — negotiated rates show up in the comparison

Shipping cost flows into per-unit P&L automatically the moment a label is bought

Address validation to catch typos before a package goes to nowhere

How it changes your day

Orders show up in Rilk the moment they're placed, with the shipping step right on the order — ship a single order in three clicks, or bulk-print 200 labels at once, with the cost landing on the order and the unit's P&L automatically. Rilk shows the Buy Shipping rate next to your own carrier rate side by side, so when Buy Shipping is cheaper you use it, the label is valid, and account health metrics stay clean.

What's included

International shipping is on the roadmap — more carriers, more cross-border lanes, and the customs paperwork and duty that go with them. Today's labels are domestic: UPS, FedEx, USPS, and DHL Express.

Live rate shopping across UPS, FedEx, USPS, DHL

Native Amazon Buy Shipping (rates, label print, tracking flow-back)

Native Walmart Buy Shipping (rates, label print, tracking flow-back)

Bring your own carrier credentials

One-click single-order label printing

Bulk-print mode for batch fulfillment

Address validation

Shipping cost auto-tied to order and per-unit P&L

Reprint and void support

Pick-and-pack workflows with packing slips

Frequently asked questions

How does cheapest-label rate shopping work in Rilk?

Every order shows live UPS, FedEx, USPS, and DHL rates side by side with service level and transit time — plus the Amazon or Walmart Buy Shipping rate on those orders. You pick the cheapest service that meets the delivery date, and the label cost lands on the order the moment you buy it.

Is Buy Shipping integration included?

Included, on every plan. Amazon Buy Shipping and Walmart Buy Shipping labels are bought inside Rilk, print to your thermal printer, and push valid tracking back to the marketplace.

Is there a per-label or per-carrier fee?

No. Printing labels on your own carrier accounts is included starting on the free plan. You pay the carrier for postage and nothing to Rilk for the label.

Does Rilk handle international shipping?

Not yet. Today Rilk buys domestic UPS, FedEx, USPS, and DHL Express labels, plus Amazon Buy Shipping and Walmart Buy Shipping on those channels' orders. There is no customs form generation, harmonized code lookup, or duty calculation in Rilk today — international shipping is on the roadmap.

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