Choosing a 3PL for Amazon FBM Sellers

What a 3PL does for Amazon sellers

A third-party logistics provider stores your inventory, picks and packs orders and ships them, often with returns handling and inbound receiving. For Amazon FBM, the 3PL must meet Amazon's delivery and tracking expectations, because your account metrics depend on its performance.

Define your requirements

List order volumes, peak patterns, product sizes, special handling needs, destination countries, return volumes and service levels. This prevents choosing a provider optimized for different needs.

Integration and order flow

Ask how orders flow from Amazon to the warehouse and how tracking returns. Integration may use a platform, a connector or manual files. Reliability here is crucial because delays in order transfer or tracking upload create late shipments.

Performance and service levels

Ask for measures such as order accuracy, on-time dispatch, cut-off times, inventory accuracy and damage rates, and how they are measured. Request references from sellers with similar profiles.

• Order cut-off times and dispatch speed
• Pick and pack accuracy
• Inventory accuracy and cycle counts
• Returns processing times

Cost structure

Costs often include receiving, storage, pick fees, packaging, shipping and sometimes account fees. Request a complete quote based on your actual order profile and check for minimums and surcharges. Compare total cost per order.

Contracts and protection

Check contract length, notice periods, liability for lost or damaged goods, insurance, data security and what happens to your inventory if the relationship ends. Clarify who is responsible for carrier claims.

Pilot before committing

Start with a limited set of products or a trial period. Monitor accuracy, speed and communication closely, and compare the results to your own performance data before scaling.

A worked example

A seller outgrows its in-house packing and tests a 3PL with a subset of orders. Two weeks of data show dispatch within cut-off times and strong accuracy, but tracking uploads are delayed by a few hours. They fix the integration schedule before moving more volume.

Common mistakes

Typical mistakes include choosing on price alone, skipping references, accepting vague service levels and moving all inventory at once. Keep an exit plan and a contact escalation path.

Questions to ask on a warehouse visit

If you can visit the facility, look at how inventory is stored and labeled, how orders are picked and checked, how returns are handled and how damaged goods are segregated. Ask how they handle peaks, what their backup plan is when systems fail and how they train staff.

A tidy, well-run warehouse with documented procedures is usually a good sign, while chaos and vague answers are a warning. If a visit is impossible, request a video walkthrough.

Your next three steps

Run a structured 3PL selection.

• Write your order profile and service requirements.
• Request full quotes and two references from similar sellers.
• Pilot with a subset of products and measure accuracy and tracking.