Estimated Delivery Dates: Accurate Delivery Promises That Convert
Your customer has a full cart. They're ready to buy. Then they see "Ships in 3-5 business days" and start doing mental math. *When does that actually arrive? Will it get here before the birthday party?*
That moment of uncertainty kills conversions.
Delivery-related concerns are among the top reasons shoppers abandon carts, yet 41% of major ecommerce checkouts still don't display a delivery date. For mid-market brands and 3PLs managing complex fulfillment networks, the problem compounds with inventory spread across multiple warehouses, varying carrier performance by region, and service level options that change the calculation entirely.
WarpWare's Estimated Delivery Date (EDD) capability solves this by calculating accurate, specific delivery promises in real time — powered by the same operational data that runs your fulfillment.
How It Works
When a delivery promise is requested, WarpWare evaluates your entire fulfillment network:
Which warehouse actually has this SKU in stock? Not a default assumption — real inventory data from your WMS.
Each warehouse has its own SLA: processing days, cutoff time, operating days, holiday calendar. WarpWare handles the timezone math.
Zip-to-zip transit data for USPS, UPS, and FedEx across every service level. Over 1 million zone-to-zone records.
Custom or made-to-order items take longer. Per-SKU processing overrides automatically adjust the estimate.
WarpWare evaluates warehouse SLAs, carrier transit data, and live inventory to compute an exact delivery date.
"Fri, Apr 10" — not "3–5 business days." Zip-to-zip carrier data across 1M+ zone records.
Ground, Express, 2-Day, and Overnight — all returned in a single request under 200ms.
Every delivery promise is stored and compared against actual delivery. Your dashboard shows on-time rate trending over 30/60/90 days.
Heritage Hounds
Bomber Jacket
One script tag. Fully customizable colors, messaging, and service levels.
Multiple Service Levels, One API Call
Request Ground, Express, 2-Day, and Overnight estimates in a single call. Each comes back with its own delivery date, giving your customers — or their AI shopping agents — the ability to choose based on urgency and budget.
POST /partner/v1/edd/estimate
{
"skus": ["HH-CAMO-JACKET-L"],
"dest_zip": "64111",
"service_levels": ["Ground", "Express", "2Day", "Overnight"]
}Response in under 200ms — cached, indexed, no cold starts.
Promise Accuracy: Trust But Verify
Here's where WarpWare goes beyond just showing a date on a checkout page.
Every delivery promise is stored when the order enters the system. When the carrier delivers the package, WarpWare automatically compares the actual delivery date against the promise. Your dashboard shows:
If your Kansas City warehouse is consistently missing its 1-day processing SLA, you'll know. If FedEx Ground to the Northeast is running 2 days slow, you'll see it before your customers complain.
Built for 3PLs
If you're a 3PL managing hundreds of tenants, EDD is a differentiator. Offer accurate delivery promises as a value-added service to your merchant clients:
Your merchant clients get better checkout conversion. Their customers get accurate delivery promises. And the fulfillment guidance embedded in every EDD response helps optimize how orders flow through your network.
For Brands: 5-Minute Setup
If you're a brand using WarpWare (directly or through your 3PL):
No engineering project. No consultants. No months of integration work. The data is already in WarpWare — we're just exposing it at checkout.
The Operational Layer, Extended
EDD extends WarpWare from post-purchase order operations into the pre-purchase checkout experience. Because WarpWare already manages your orders, inventory, warehouse locations, and carrier data, the delivery promise draws from the same source of truth that powers your actual fulfillment.
This is what it looks like when your operational layer works end-to-end: from "when will it arrive?" through fulfillment, shipment, and delivery confirmation.
Better delivery promises. Higher conversion. Fewer "where's my order?" tickets.
Better delivery promises. Higher conversion. Fewer "where's my order?" tickets.