EasyPost · InfiPlex OMS Integration
EasyPost Integration: keep your rate-shopping API, add real multichannel OMS
EasyPost rate-shops across 100+ carriers from a single integration — but it isn't built to be the multichannel order and inventory brain behind a growing operation. The InfiPlex™ OMS aggregates every sales channel into one queue, keeps inventory synced everywhere in real time, and hands EasyPost exactly the orders that need labels.
- Keep Your Rate-Shopping WorkflowEasyPost stays your label & rate engine
- Multichannel Order AggregationEvery sales channel feeds one shipping queue
- USA-Based Support TeamOnboarding & configuration included
How it works
How the InfiPlex EasyPost integration works
Think of EasyPost as the rate-shopping and label engine, and InfiPlex as the layer above it that actually aggregates every sales channel into one order queue and keeps inventory accurate across all of them. InfiPlex sends orders that need shipping over to EasyPost, EasyPost returns the rate, label, and tracking information across whichever carriers you've connected, and InfiPlex pushes that tracking back out to whichever marketplace or storefront the order came from.
What’s included
Everything the EasyPost integration handles for you
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Keep Your Rate-Shopping Workflow
EasyPost stays your label and rate engine — your team's existing process doesn't change.
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Multichannel Order Aggregation
InfiPlex pulls orders from every sales channel and sends shipment-ready orders to EasyPost.
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Real-Time Inventory Sync
InfiPlex handles the cross-channel inventory reconciliation EasyPost alone doesn't provide.
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Tracking Routed Back Automatically
Labels and tracking from EasyPost flow back through InfiPlex to whichever channel the order came from.
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Wallet or BYOCA, Your Choice
Works with either EasyPost's prepaid Wallet Carriers or your own connected carrier accounts.
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No Disruption to Automation Rules
Existing EasyPost automation, webhooks, and branded tracking continue to apply exactly as they do today.
Frequently asked
Top EasyPost questions, answered
Our dedicated FAQ hub answers 26 real questions about setup, order management, inventory sync, shipping, and pricing. A few of the most-asked:
Connect the rest of your stack
Pair EasyPost with the systems you already run
InfiPlex connects EasyPost with 130+ marketplaces, carts, shipping platforms, 3PLs, WMS, and ERP systems — and our Growth Packages include building new API integrations you need at no additional cost.
- NetSuitePush orders & revenue into your ERP of record
- QuickBooks OnlineRevenue lands cleanly in the books
- 3PL ConnectorRoute orders to a 3PL instead of shipping in-house
- Amazon (all channels)Seller Central, Vendor Central, FBA & Business
- ShopifyDTC storefront on the same inventory pool
- ShipStationAnother label workflow InfiPlex can feed orders to
- UPSConnect a UPS account directly, if you prefer
- FedExConnect a FedEx account directly, if you prefer
Ready to put EasyPost on autopilot?
your OMS is typically live in 1–3 business days, and our USA‑based team handles onboarding with you — no coding required.
Questions about your exact setup?
Our team configures EasyPost integrations every week. Contact us, email info@infiplex.com, or call 888‑770‑0857 and we’ll walk through your channels, warehouses, and volume together.
EasyPost is a trademark of EasyPost. All other marketplace and product names are trademarks of their respective owners. InfiPlex is an independent integration provider and is not endorsed by or affiliated with EasyPost. ©2026 InfiPlex. All rights reserved.
