Prioritize proven pick-and-pack throughput, inventory visibility (WMS/API), returns processing, SLA-based order-to-ship metrics, and temperature-control where needed. Also evaluate cross-dock capability, carrier integrations, and contingency capacity for peak seasons to maintain delivery performance and margin control.

A Saatly-located 3PL can reduce inland transit times due to proximity to arterial routes and regional markets, lowering last-mile mileage and carrier charges. Consider lane analysis and carrier density—savings depend on shipment density, routing, and consolidation opportunities.

Insist on SLA metrics for order accuracy, on-time shipment, and inventory accuracy with clear penalty/remedy clauses. Include audit rights, agreed lead times for capacity changes, data access (real-time inventory), and liability terms for loss, damage, and customs handling.

Assess available racked capacity, temporary overflow options, labor pool scalability, automated handling equipment, and WMS configurability for slotting and batch picking. Confirm lead times for additional space, peak labor sourcing, and any capital investment plans that could affect throughput.