The 7 Best 3PL Shipping Software for Carriers and Returns in 2026

Running a 3PL means shipping for many clients at once, each with its own carriers, rules, branding and return policies. Managing that by hand, or with a warehouse system that was not built for shipping, slows your team down and makes carrier costs hard to control.

This guide compares the 7 best 3PL shipping software options in 2026, with features and pricing checked on each vendor's own website in October 2026. It also explains how 3PL shipping software differs from a WMS, what multi-client shipping requires, how to turn returns into a service line, and how to onboard clients without disrupting their orders.

Best shipping software for 3PL providers in 2026

The table compares the criteria 3PLs check first: multi-client management, a client portal, rate shopping, client billing, warehouse management, and branded tracking and returns for each client. On mobile, swipe sideways to see every column.

✓ available · Partial: available with limits (client billing without a billing module, returns offered as a fulfillment service, or branding in the 3PL's own brand rather than each client's) · — not described on the vendor's website. Outvio is not a full WMS: it automates picking, packing and shipping and connects to the WMS you run. Prices as published in October 2026; all seven vendors quote on request.

How we picked these 3PL tools

Most "best 3PL software" lists rank warehouse management systems. This one looks at the work that happens after an order is packed, because that is where carrier costs, client branding and returns are decided.

• Multi-client support: separate settings, rules and reporting for each client.
• Carrier automation: rate shopping or rule-based carrier selection across several carriers.
• Client-facing post-purchase: tracking, notifications and returns that can carry each client's brand.
• Public evidence: every feature in this guide is described on the vendor's own website, checked in October 2026.

Warehouse platforms with strong shipping features are included because many 3PLs compare them side by side with shipping software. The order is not a ranking.

What is 3PL software for shipping and carrier integrations?

3PL shipping and carrier integration software connects your warehouse to the carrier network and automates what happens once parcels leave your facility.

It decides which carrier ships each order, generates labels, sends tracking updates and handles returns, applying separate shipping rules for every client you manage.

How is 3PL shipping software different from a WMS?

A WMS for 3PLs manages what happens inside the warehouse: inventory, storage, picking and internal workflows.

3PL shipping software manages the journey after the order is packed: multi-carrier shipping automation, tracking and branded notifications, returns and carrier invoices, for multiple clients at once. Many 3PLs use both, connected through integrations.

In practice, the split looks like this:

• The WMS owns: receiving, put-away, inventory by client, bins and locations, picking and packing.
• 3PL shipping software owns: carrier selection, labels, client-branded tracking and notifications, returns and exchanges, carrier invoice checks and shipping invoices for each client.
• Both need to share: orders, SKUs, package weights and dimensions, and shipment status.

What multi-client shipping actually requires

"Multi-client" can mean anything from a client dropdown to fully separate accounts. Before you sign, check how the software handles each of these:

• Separate accounts: each client sees only its own orders, shipments, returns and reports.
• Client-specific carrier rules: different carriers, services and cut-off times per client, and the option to use the 3PL's carrier accounts or the client's own.
• Client branding: tracking pages and notifications that carry each client's brand, not only the 3PL's.
• Returns per client: each client keeps its own return policy, reasons, portal and exchange options.
• Billing per client: shipping invoices generated per client, so carrier costs can be passed on accurately.
• Fast onboarding: adding a new client should mean a new account and a few rules, not a new integration project.

Outvio was built around this model. Its 3PL warehouse software offers unlimited client accounts with unified management, notifications in each client's branding by email, SMS or WhatsApp, and client invoicing from the same data.

Benefits of 3PL shipping software for eCommerce

• Efficiency: shipping, labels, tracking and returns run automatically, which removes manual work and errors.
• Lower carrier costs: carrier selection rules and invoice audits help you pay the right price for every parcel.
• Better client service: each client gets its own rules, branding and reporting, so you can offer more than storage and pick-and-pack.
• Visibility: shipments, returns and carrier performance live in one dashboard for all clients.
• Client retention: branded tracking and smooth returns improve your clients' customer experience, which makes your service harder to replace.

What a 3PL can sell on top of pick and pack

Storage and pick-and-pack are easy for a client to compare on price. The services around the shipment are harder to replace, and they are the ones shipping software makes possible:

• Client-branded tracking: each client gets tracking pages and delivery notifications in its own brand, so its customers never see a generic carrier page.
• Returns and exchanges as a service: a portal per client, with its own reasons, labels and exchange rules, instead of parcels arriving unannounced.
• Delivery notifications by email, SMS and WhatsApp: the client does not need its own notification tool.
• Support for the client's customers: a helpdesk connected to shipments and returns answers delivery questions without a separate subscription per agent.
• Shipping cost transparency: per-client invoices and carrier invoice audits show exactly what each client costs to ship.

Outvio covers all five from one dashboard, which is why a 3PL can offer them as part of its own service instead of asking every client to buy more apps.

How does 3PL software improve international shipping?

International shipping adds carriers, customs stages and more points where parcels can get stuck. Centralized tracking shows cross-border movements, customs clearance and last-mile handovers in one timeline.

Your team can react to delays before they escalate, while branded tracking updates keep end customers informed during long transit times.

Returns and exchanges as a 3PL service line

Returns are a large and growing share of ecommerce logistics. In the 2025 Retail Returns Landscape report by NRF and Happy Returns, retailers estimated that 15.8% of annual sales would be returned, worth $849.9 billion, and that 19.3% of online sales would come back.

For a 3PL, that volume is either a cost center or a service you can sell. The difference is whether returns arrive as unannounced parcels or as registered requests with a reason, a label and a decision.

The same NRF report found that 76% of consumers are more likely to choose a return option that gives an instant refund or exchange. A client-branded returns portal with exchanges lets you offer exactly that to your clients' customers.

Outvio's RMA management turns exchange or return requests into recurring revenue for your clients, and the helpdesk with unlimited agents lets your team answer their customers without per-seat costs.

The 7 best 3PL software for shipping management

Each review uses the same spec block, so you can compare client management, carriers, billing, integrations and pricing side by side. Every fact comes from the vendor's own website, checked in October 2026.

1. Outvio

Outvio is a shipping, tracking and returns software solution with dedicated functionality for 3PLs that ship for high-volume and growing ecommerce stores. On its 3PL page, Outvio reports -28% shipping costs, +113% operator efficiency and 2x order processing speed.

• Multi-client: unlimited brands managed from one place, with separate dashboards and client-specific fulfillment, delivery and returns automations.
• Client visibility: clients connect through their own Outvio account and see the status of their orders at every step of fulfillment; onboarding a new client takes less than 3 minutes.
• Carriers and rate shopping: 90+ couriers, automatic carrier selection rules and carriers added or removed within minutes.
• Client billing: generate shipping invoices for your clients and audit carrier invoices with Invoice Checker.
• Integrations: 20+ CMS and marketplaces on the 3PL plan; Outvio says it works with whatever CMS, ERP or sales channel your clients use, and your warehouse can be connected in one business day.
• Warehouse: automated picking, packing and shipping with client-specific rules; inventory and bins stay in your WMS.
• Branded tracking and returns: notifications by email, SMS or WhatsApp in each client's branding, branded tracking pages and RMA management with exchanges.
• Plans and prices: custom quote for the 3PL plan; a free trial is offered on the 3PL page.

2. Extensiv

Extensiv is a 3PL warehouse management platform that, according to its 3PL page, 1,500+ 3PLs have joined.

• Multi-client: a 3PL warehouse platform with receiving, barcode scanning and real-time putaway tracking across clients.
• Client portal: clients view their own rates, line items and charges and make payments in their own portal (Billing Manager).
• Carriers and rate shopping: compares rates in real time, with a carrier mix customized for each client, plus batch, high-volume label printing in Small Parcel Suite.
• Client billing: Billing Manager captures billable events and sends automated digital invoices.
• Integrations: Integration Manager (formerly CartRover) connects hundreds of technology providers.
• Warehouse: full 3PL WMS.
• Branded tracking and returns: not described on its product pages.
• Plans and prices: custom quote after a free demo.

3. ShipBob

ShipBob is an ecommerce fulfillment provider with 50+ fulfillment centers. It also sells its WMS to merchants that run their own US warehouses, so it is mainly an option for brands rather than software for 3PLs.

• Multi-client: not described; the WMS is for merchants with their own warehouse.
• Client portal: not described for 3PL clients; merchants work in the ShipBob dashboard.
• Carriers and rate shopping: not described as a WMS feature.
• Client billing: ShipBob bills merchants for fulfillment; every quote is customized.
• Integrations: 50+ few-click integrations in its App Store, including Shopify and Amazon, plus an API.
• Warehouse: WMS for merchants with their own US warehouse shipping 3,500 to 120,000 orders a month, plus its own fulfillment network.
• Branded tracking and returns: returns offered as a value-added service for a flat fee.
• Plans and prices: custom quote for fulfillment and for the WMS, based on volume, batchable orders and other factors.

4. Infoplus

Infoplus is a warehouse management system that treats multi-client environments as the default, with integrated multi-carrier shipping.

• Multi-client: logical inventory separation per client, client-specific SLAs and routing logic, across several warehouses.
• Client portal: not described; shipping runs inside Infoplus without portal switching.
• Carriers and rate shopping: comprehensive rate shopping, custom rules for carrier selection, labels and tracking in one place.
• Client billing: order, line and carton activity tracked per product and client, with billing rules that change with client SLAs.
• Integrations: Shopify, Amazon, Walmart and EDI retail compliance.
• Warehouse: full multi-client WMS.
• Branded tracking and returns: not described on its product pages.
• Plans and prices: custom quote; the pricing page offers the first three months free.

5. Logiwa

Logiwa describes itself as an AI-driven 3PL WMS for 3PL providers and high-volume brands, so it fits teams that want AI-powered logistics software inside the warehouse.

• Multi-client: multi-client support and multi-client operations.
• Client portal: a client portal and dashboard, with unlimited users for your team and your clients.
• Carriers and rate shopping: built-in rate shopping, shipment automation rules and third-party carrier account management.
• Client billing: billing and contract management, with billing integrations to ERPs.
• Integrations: pre-integrated with popular ecommerce sites, plus an Open REST API, webhooks and EDI.
• Warehouse: full WMS with multi-warehouse operations.
• Branded tracking and returns: returns management, and custom branding listed alongside the client portal.
• Plans and prices: custom quote based on fulfillment volume and complexity, not user count.

6. ShipHero

ShipHero is a warehouse management system with a white-label 3PL client portal.

• Multi-client: per-client cost tracking and client accounts in the 3PL portal.
• Client portal: white-label, self-service portal on your own subdomain for orders, inventory, inbound shipments and reports.
• Carriers and rate shopping: live carrier rate shopping.
• Client billing: your logo on invoices, labels and emails, plus a labor cost dashboard with per-package, per-client costs.
• Integrations: Shopify, Magento 2, BigCommerce, Walmart, TikTok Shop, eBay, NetSuite, Brightpearl and Loop Returns, plus UPS, USPS, FedEx and DHL.
• Warehouse: full WMS.
• Branded tracking and returns: returns authorizations, inspections and refunds through the client portal, in the 3PL's brand.
• Plans and prices: custom quote after a demo; the old pricing page now returns a 404.

7. Magaya

Magaya is a digital freight platform for logistics companies, with warehouse management, freight forwarding and customs compliance.

• Multi-client: 3PL software for order fulfillment, inventory, warehousing, shipping and billing.
• Client portal: a branded Digital Freight Portal with self-service schedules, quotes, bookings and reporting, plus customer visibility in a mobile app.
• Carriers and rate shopping: freight rate management and quotes; parcel rate shopping is not described.
• Client billing: integrated billing, invoicing and accounting, with QuickBooks integration.
• Integrations: modular platform with accounting and ocean carrier rate data integrations.
• Warehouse: Magaya WMS with serials, lots, expiration dates and multiple warehouses.
• Branded tracking and returns: returns management is not described.
• Plans and prices: tailored to each organization, based on the solutions required and the number of users.

3PL shipping software pricing: what to expect

None of the seven vendors publishes a list price for 3PLs. The table shows what each one does publish: trial offers and what the quote depends on.

Quotes usually depend on:

• The number of clients, warehouses and users (Magaya counts users; Logiwa says it does not)
• Monthly order and shipment volume (Logiwa and ShipBob price by volume)
• The modules you need, such as shipping, returns, billing or analytics
• Integrations, implementation and support

Outvio offers custom pricing for 3PLs and a free trial. Its 3PL plan includes 90+ couriers, 20+ CMS and marketplace integrations, unlimited brands managed from one place and dedicated 3PL functionality.

How to choose the right 3PL shipping software

Tips:

• True multi-client capability: manage each client separately and securely, with its own rules, branding and reporting.
• Carrier coverage and rules: check that the software supports your carriers and selects the right one for each order automatically.
• Post-purchase services: branded tracking, notifications and returns are services you can offer your clients.
• Cost control: carrier invoice audits and client invoicing protect your margins.
• Integrations: connect your WMS, ecommerce platforms, ERP and accounting systems.

Common mistakes:

• Choosing on price alone: a cheap tool without the right features costs more in manual work.
• Assuming all multi-client features are equal: check data separation, per-client settings and reporting.
• Ignoring returns: returns are a growing part of 3PL work and a service clients pay for.
• Forgetting carrier invoices: without audits, overcharges and duplicate charges go unnoticed.

Which type of software fits your 3PL

• You already run a WMS and ship high volumes for ecommerce clients: add 3PL shipping software such as Outvio on top, so carrier rules, client branding, returns and invoicing are handled after packing.
• You need warehouse management first: a 3PL WMS such as Extensiv, Infoplus, Logiwa or ShipHero covers inventory and picking, with shipping features of different depth.
• Freight and customs are a big part of your business: a freight platform such as Magaya combines warehousing with forwarding and compliance.
• You want to build custom 3PL software: in-house development makes sense mainly when your supply chain management or freight forwarding workflows are unusual. Most 3PLs get there faster with API-driven software solutions: Outvio offers shipping, tracking and returns APIs, and Logiwa an Open REST API.
• You are a brand deciding whether to outsource: a fulfillment provider such as ShipBob is the alternative to running your own warehouse.

3PL shipping software checklist

Use this list in vendor demos. Ask to see each item with a real client setup, not slides.

• Separate client accounts with their own users, rules and reports
• 3PL carrier accounts and client-owned carrier accounts side by side
• Rule-based carrier selection per client, warehouse and service level
• Tracking pages and notifications in each client's brand
• A returns portal with exchanges and store credit, configurable per client
• Shipping invoices per client and carrier invoice audit
• Integrations with your WMS, the clients' stores and marketplaces
• An API for anything not covered by ready-made integrations
• EDI support if retail clients expect you to deliver shipment confirmation and invoice messages by EDI (Infoplus and Logiwa list EDI)
• Onboarding time for a new client, in days

How to onboard a new 3PL client without disruption

1. Create the client account and connect its store or marketplace.
2. Map carriers and services: which run on your accounts and which on the client's.
3. Set shipping rules for each warehouse, service level and destination.
4. Apply the client's branding to tracking pages, notifications and the returns portal.
5. Configure return reasons, exchange options and refund rules with the client.
6. Ship a test batch, check labels, tracking events and invoices, then switch all orders.

3PL shipping glossary

• Multi-client (multi-tenant): one platform that keeps each client's data, rules and reports separate.
• Carrier mix: the set of carriers and services available for a client or warehouse.
• Rate shopping: comparing carrier prices for each shipment before buying the label.
• RMA: return merchandise authorization, the registered approval for a return.
• Client branding: tracking, notifications and returns that show the client's brand, not the 3PL's.
• Invoice audit: checking carrier invoices for overcharges and duplicate charges before paying them.

Questions to ask every 3PL software vendor

• How long does it take to onboard a new client, and who does the work?
• Can one warehouse run the 3PL's carrier accounts and a client's own accounts at the same time?
• Can tracking pages and return portals carry each client's brand, or only the 3PL's?
• What happens to a return: is it a warehouse task, or a request the end customer starts online?
• How are shipping costs invoiced back to each client, and can carrier invoices be audited first?
• Which WMS, stores and marketplaces connect out of the box, and what needs the API?
• What is included in the quote, and what costs extra per client, per warehouse or per module?

How to maximize 3PL software ROI

3PLs can do more than move parcels. When your clients get branded tracking, proactive notifications and smooth returns and exchanges, their customers buy again, and you ship more orders for them.

With Outvio, you manage all clients from one dashboard, cut carrier costs with automatic carrier selection and invoice checks, and offer post-purchase services that make your 3PL stand out.

Request a demo to see how Outvio works for your 3PL.