Best shipping software for Amazon sellers (2025)

Amazon's Seller Performance metrics are unforgiving. Late shipments, invalid tracking, and delivery defects can suspend your selling privileges. Standard carrier websites and manual processes lead to mistakes. Dedicated shipping software automates tracking upload, enforces carrier mapping rules, and catches errors before they hurt your account. For FBM (Fulfilled by Merchant) sellers doing any volume, shipping software isn't optional—it's essential for protecting your business.

Late Shipment Rate (LSR): Orders must ship by the promise date with valid tracking uploaded. Target: under 4%. Valid Tracking Rate (VTR): Tracking must be valid and from an approved carrier. Target: over 95%. Order Defect Rate (ODR): Includes negative feedback, A-to-Z claims, and chargebacks. Target: under 1%. Pre-fulfillment Cancel Rate: Canceled orders before shipping. Target: under 2.5%. Your shipping software should help you hit all these metrics consistently.

Automatic tracking upload: Tracking should sync to Amazon within minutes of label creation—not hours. Carrier mapping: Map Amazon shipping templates to actual carrier services to ensure transit times match promises. Weekend and holiday handling: Some services don't count weekends; your software should account for this. Batch processing: Print dozens or hundreds of labels quickly during peak periods. Buy Shipping API integration: Use Amazon's Buy Shipping for discounted rates and guaranteed metrics compliance.

Amazon Buy Shipping offers discounted USPS, UPS, and FedEx rates directly through Seller Central. Pros: Guaranteed Valid Tracking Rate compliance, often competitive pricing, automatic metrics protection. Cons: Limited carrier options, rates may not beat negotiated third-party rates for high volume. Third-party shipping software like ShipWave can offer better rates by shopping across all carriers, but you must ensure tracking format compliance. Many sellers use a hybrid approach—Buy Shipping for risky orders, third-party for cost optimization.

Amazon orders often contain multiple quantities or items. Your shipping software should: Combine items into optimal package configurations, split oversized orders into multiple shipments automatically, maintain accuracy when partial shipments occur, and handle Amazon's strict requirements for multi-package orders. Incorrect handling leads to customer complaints and A-to-Z claims.

Don't assume one carrier is always cheapest. A 3 lb package to zone 5 might be cheapest via USPS, while the same weight to zone 8 might favor UPS Ground. Good shipping software automatically compares all carrier options considering: Base rate, fuel surcharges, residential fees, dimensional weight, and delivery timeline requirements. Savings of 15-30% are common when rate shopping versus using a single carrier.

Document everything. Your shipping software should maintain records of: Tracking upload timestamps, carrier and service used, label purchase details, and delivery confirmation. When Amazon buyers file A-to-Z claims, this documentation is your defense. ShipWave automatically tracks all shipping activity and provides easy access to dispute documentation.

ShipWave is purpose-built for e-commerce sellers with Amazon compliance in mind. Key features include: Real-time rate comparison across USPS, UPS, FedEx, and DHL. Automatic tracking sync to Amazon within minutes. Carrier mapping that matches your shipping templates. Batch processing for high-volume periods. Discounted commercial rates (up to 54% off retail). Returns management that protects your metrics. Free to start with no monthly fees—you only pay for labels.