SP-API Update: Fulfillment Outbound Tracking Now Includes Delivery Window Data
Amazon added a deliveryWindow property to the Fulfillment Outbound API's getTracking operation, giving sellers estimated delivery time ranges for packages across all global marketplaces.
Overview
Amazon rolled out an update to the Fulfillment Outbound API within SP-API on January 29, 2025, adding a deliveryWindow field to the getTracking operation that returns both start and end timestamps for estimated delivery timeframes. The enhancement applies across all Amazon marketplaces globally and requires no separate enablement for sellers already using the API.
Key Points
- Delivery Window Property Added — New
deliveryWindowfield ingetTrackingoperation (Fulfillment Outbound API v2020-07-01) returns start and end timestamps defining delivery time range. - Range-Based Estimates — Provides delivery window range (e.g., 2 PM - 6 PM) rather than single point-in-time estimate, accounting for natural logistics variability.
- Global Availability — Update applies to all Amazon marketplaces worldwide with consistent tracking capabilities.
- Immediate Access — Sellers and developers already using Fulfillment Outbound API can access property immediately by updating code to parse new field.
- Dynamic Windows — Delivery windows may narrow or shift as packages move through network, so retrieve fresh data when providing current status instead of caching.
Use Cases
- Customer Communication — Provide specific timeframes to customers inquiring about order status (e.g., "package expected between 2-6 PM today") instead of vague responses.
- Multi-Channel Fulfillment — Coordinate downstream processes, schedule receiving activities, and plan around customer commitments for MCF orders to businesses with specific receiving schedules.
- Exception Handling — Compare delivery window against actual delivery scans to flag packages at risk of missing expected windows for proactive customer outreach.
- Automated Notifications — Trigger proactive messages when packages reach "expected today" status with specific delivery timeframes to reduce "where is my order?" support inquiries.
Analysis & Recommendations
Why This Matters
Sellers using the SP-API for fulfillment tracking can now access delivery time windows, enabling more accurate customer communication and proactive exception handling that can reduce support contacts and improve satisfaction metrics.
Key Takeaways
- New deliveryWindow property available in Fulfillment Outbound API getTracking operation with start and end timestamps
- No additional registration or permissions needed — existing API users can parse the new field immediately
- Delivery windows may be null for early-stage shipments and can shift as packages progress through the network
- Available across all Amazon marketplaces globally for consistent tracking capabilities
Recommended Actions
- →Update your SP-API integration to parse the new deliveryWindow field from getTracking responses, with graceful null handling
- →Evaluate how delivery window data could enhance your customer notification workflows to reduce 'where is my order' contacts
- →Consider building exception-detection logic that flags packages at risk of missing their delivery window for proactive customer outreach
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