Shipping Carrier Integration

Connecting Shipping Carriers

WareSquared integrates with shipping carriers to provide real-time rates, label generation, tracking, and address validation.

Supported Carriers

Carrier Integration Best For
Shippo Multi-carrier aggregator Access to USPS, UPS, FedEx, DHL, and more through one API
UPS Direct integration Medium to heavy packages, business-to-business
FedEx Direct integration Express shipping, time-sensitive deliveries
USPS Coming soon Lightweight packages, domestic shipping
DHL Coming soon International shipments

Setting Up

  1. Go to Settings → Shipping Carriers
  2. Click + Add Carrier
  3. Select the provider
  4. Enter a name for this carrier (e.g., "Production UPS Account")
  5. Enter your API credentials
  6. Choose Environment: Sandbox (testing) or Production (live)
  7. Click Save

You can configure multiple carriers and set one as the default.

Getting Shipping Rates

When fulfilling an order:

  1. Click Ship Order on a confirmed order
  2. WareSquared fetches real-time rates from all configured carriers
  3. Compare rates, delivery times, and service levels side-by-side
  4. Select the best option and purchase a shipping label

Purchasing Labels

After selecting a rate:

  • The shipping label is generated and available for download/print
  • The tracking number is automatically saved to the order
  • The customer can be notified with tracking information

Address Validation

Before purchasing a label, WareSquared can validate the shipping address through your carrier:

  • Checks for valid street addresses, city/state/zip combinations
  • Suggests corrections for common issues (apartment numbers, typos)
  • Helps reduce failed deliveries and return-to-sender packages

Voiding Labels

If an order is cancelled or the wrong label was purchased:

  1. Go to the shipment details
  2. Click Void Label
  3. The label is cancelled with the carrier (refund policies vary by carrier)

Tracking Shipments

WareSquared tracks both outgoing and incoming shipments:

  • Outgoing: Tracking numbers from purchased labels are linked to orders
  • Incoming: Track supplier shipments and incoming transfers with expected delivery dates
  • Overdue alerts: Shipments past their expected delivery date are flagged automatically (see Notifications)

Tip: Use Shippo to compare rates across carriers for every shipment. Even a few dollars saved per package adds up significantly over thousands of orders.

See also: Packing and Shipping, Order Fulfillment Process, Notifications and Alert Settings

Last updated April 09, 2026
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