A low pick-and-pack rate tells you little about what a logistics partnership will cost or how it will perform.
Before choosing a third-party logistics provider, compare its product handling, warehouse locations, technology, total fees, service commitments, and exit terms against your own operation.
Give each finalist the same order data, ask for evidence behind its promises, and test the workflow before moving all your inventory.
This approach helps you choose a 3PL that fits how your business sells and ships.
What Does a 3PL Provider Do?
A third-party logistics provider handles outsourced logistics.
For an e-commerce business, that can include receiving inventory, storing stock, picking and packing orders, arranging carrier shipments, and processing returns. The services depend on the agreement.
Define the work you need before comparing companies.
Storing products by SKU and fulfilling individual customer orders involves different processes from receiving a parcel and forwarding it.
If you mainly need to receive and reship selected parcels, a package forwarding service may cover that task.
If you need inventory counts, order routing, and ongoing fulfillment, ask providers to demonstrate those functions.
1. Give Every Provider the Same Business Data
Prepare one request for proposal, or RFP, so providers quote the same work. Include a recent order export with customer information limited to what the evaluation requires, such as destination ZIP Codes.
- Monthly orders, daily peaks, and seasonal forecasts
- SKU count, product dimensions, weights, and storage needs
- Items per order, bundles, inserts, and packaging requirements
- Customer destinations and delivery promises
- Inbound shipment frequency and expected inventory levels
- Sales channels, software, return volume, and handling instructions
Separate requirements from preferences. For example, lot tracking may be essential for your products, while branded tissue paper may be optional.
Remove providers that cannot meet an essential requirement before comparing their prices.
2. Evaluate the Warehouse That Will Handle Your Products
Ask which facility would receive your inventory and who operates it.
Evaluate that site’s capacity, handling procedures, and recent performance rather than relying only on the provider’s network size.
Have each finalist model shipping from its proposed location using your destination mix, packed dimensions, and service needs.
More warehouses can shorten some shipping routes, but splitting inventory also adds replenishment, stock allocation, and transfer decisions.
For fragile, perishable, temperature-sensitive, or regulated goods, ask for evidence of the handling capabilities your products require.
Ask how staff manage damaged inbound cartons, stock discrepancies, restricted items, and product recalls when applicable.
3. Test the Integration With Your Actual Workflows
A provider’s list of platform logos does not show how your orders will move through its system.
Request a demonstration using examples from your store.
Test a multi-item order, a bundle, an address edit, a cancellation, and an out-of-stock item.
Check what happens when the same order reaches the system twice, or an integration stops sending updates.
Confirm which system controls available inventory, how quickly updates reach each sales channel, and how tracking returns to your store.
Ask who fixes failures, what support costs, and how you can export inventory, order, and billing records.
4. Compare the Total Cost Using the Same Order Mix
Request the complete rate card. Include receiving, storage, picking, packing materials, postage, returns, software, account fees, minimums, peak surcharges, special projects, and eventual inventory removal.
Ask how each fee is measured. A storage charge per pallet differs from one based on cubic feet or daily inventory.
Confirm how minimum charges interact with usage fees so you do not count them twice.
A Hypothetical Quote Comparison
The following example uses invented rates for 1,000 orders in one month. It illustrates a comparison method, not market pricing or a PostScan Mail quote.
Carrier postage is outside these figures and would need a separate comparison.
| Modeled monthly charge | Provider A | Provider B |
| Order handling for 1,000 orders | $2,200 | $2,800 |
| Receiving and storage | $900 | $600 |
| Packaging materials | $450 | $350 |
| Technology and other quoted fees | $550 | $100 |
| Total before carrier postage | $4,100 | $3,850 |
Provider A has the lower order-handling rate, but the modeled charges total $4.10 per order before postage.
Provider B totals $3.85. Review both the line items and the service scope before treating the difference as a saving.
Repeat the calculation for a slower month and a peak month.
Then compare the result with the costs you can actually remove from your current operation.
Any warehouse lease or staff expense that continues after outsourcing remains in your budget.
5. Put Service Levels and Measurement Rules in Writing
A service-level agreement, or SLA, should define the task, target, measurement period, exclusions, reporting, and response when the provider misses the target.
Agree on definitions before comparing percentages.
| Measure | Definition to agree on | Evidence to request |
| On-time dispatch | What counts as carrier handoff by the agreed deadline? | Order timestamps, cutoff rules, and exception records. |
| Order accuracy | Does the measure cover whole orders, lines, or individual units? | Error records matched to shipments and corrective actions. |
| Receiving turnaround | When does the clock start, and when is stock available to sell? | Arrival, check-in, discrepancy, and availability timestamps. |
| Returns turnaround | Which processing steps must finish after receipt? | Return records showing condition, disposition, and inventory updates. |
These are evaluation questions, not universal performance standards.
Choose targets that match your products, customer promises, and operating calendar.
Ask for results from the proposed site during both routine and peak periods.
Request an explanation of excluded orders and exceptions.
Agree on an escalation contact, response times, corrective actions, and any service credits in the contract.
6. Verify Experience, Insurance, and Applicable Authority
Speak with customers whose products, order mix, and volume resemble yours.
Ask what happened during a stock discrepancy, demand spike, damaged shipment, or billing dispute.
A reference that describes a resolved problem can tell you more than a general endorsement.
Review insurance documentation alongside contractual liability limits.
Ask what covers inventory in storage, handling errors, and goods in transit, including deductibles, exclusions, valuation rules, and claim deadlines. Do not assume one policy covers every stage.
If the arrangement includes regulated U.S. interstate motor-carrier, brokerage, or freight-forwarding work, identify the entity performing it and verify the applicable authority.
FMCSA’s Motus guidance explains its registration system and public record access.
Requirements depend on the activity; a fulfillment warehouse and a freight broker have different roles.
7. Define What Happens After a Return Arrives
Walk through a returned order from arrival to final disposition.
Ask who matches it to the order, records its condition, approves restocking, and updates inventory. Define which items require quarantine, disposal approval, or referral to your team.
Receiving a returned parcel does not establish that its contents are complete or ready for resale.
Ask whether inspection, testing, photography, repackaging, and refund-system updates are included, optional, or unavailable.
For example, a returned appliance may need a serial-number check and a function test before resale.
Put those steps and their approval owner in the work instructions rather than assuming “returns processing” includes them.
8. Plan a Pilot, Go-Live, and Exit
Agree on an onboarding plan with owners for system setup, SKU mapping, inbound appointments, stock counts, packaging approval, and training.
Test enough order types to cover the work your business needs.
Set acceptance criteria before the pilot starts. A first shipment going out successfully does not test cancellations, inventory adjustments, returns, or invoice accuracy.
Keep a fallback process for issues that could interrupt sales.
Review contract length, renewals, rate changes, termination notice, data exports, stock-release procedures, and removal fees.
Confirm the time and cost needed to move your inventory elsewhere.
These terms matter even when you expect the relationship to last.
Compare finalists on evidence.
Score each requirement consistently, record unanswered questions, and keep essential capabilities as pass-or-fail conditions.
A high overall score should not override a missing capability your products require.
Where PostScan Mail Can Fit Alongside a 3PL
Your business may need a place to receive correspondence, supplier samples, or customer returns while a fulfillment partner handles stocked inventory and outgoing orders.
PostScan Mail can receive eligible items at a selected address, upload exterior images after processing, and let you request forwarding or consolidation.
Confirm the location’s acceptance rules, capacity, processing times, storage charges, and any handling you need.
For inventory-based fulfillment, obtain written confirmation of SKU management, integrations, inspection, and pick-and-pack services before including them in your operating plan.
Choose your logistics partner using your order data, complete pricing, written service levels, and pilot results.
If you also need a receiving point for returns, explore PostScan Mail’s shipping and returns solution and define how items will move from that location to your fulfillment provider.
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