Best Shipping Software for Ecommerce Sellers – 2026 Honest Comparison
The right shipping software depends entirely on your volume, your carrier mix, and whether you ship domestically or internationally. The wrong choice costs you either a monthly fee you cannot justify or a per-label rate that quietly erodes your margin on every shipment. This page compares the four platforms DimMath's audience uses most: ShipStation, Pirate Ship, Shippo, and EasyShip. All pricing verified August 2026.
Which Platform Is Right for You?
ShipStation
Best for high volume multi-channel sellers.
Pirate Ship
Best free option for domestic USPS and UPS.
Shippo
Best for API access and multi-carrier comparison.
EasyShip
Best for international and cross-border shipping.
Side by Side: 2026 Pricing and Features
Verified breakdown across plan limits, integrations, rate access, and carrier compatibility.
| Feature | ShipStation | Pirate Ship | Shippo | EasyShip |
|---|---|---|---|---|
| Starting price | $14.99/month | Free | Free (30 labels/month) | Free (50 shipments/month) |
| Free trial | 30 days | Always free | Free plan | Free plan |
| Carriers | 40 plus | USPS and UPS only | Multiple domestic and international | 550 plus international |
| USPS Cubic rates | Yes | Yes automatic | Yes | Yes |
| For a full explanation of how USPS Cubic pricing works and which packages qualify see the USPS Rates by Platform guide. | ||||
| International shipping | Yes | Limited | Yes | Yes strongest |
| Shopify integration | Yes | Yes | Yes | Yes |
| Amazon integration | Yes | No | Yes | Yes |
| API access | Standard plan and above | No | Yes | Yes |
| Automation rules | Yes | Limited | Yes | Yes |
| Best for | High-volume multi-channel | Low-volume domestic | Mid-volume multi-carrier | International and cross-border |
Detailed Platform Breakdown
Real feature sets, plan boundaries, and direct links for each shipping software.
ShipStation
The most widely integrated shipping platform for multi-channel ecommerce sellers. Connects to Amazon, Shopify, eBay, Walmart, Etsy, and 300 plus other platforms. Compares rates across 40 plus carriers and prints labels in bulk with advanced automation rules. Starter plan at $14.99/month covers 50 shipments. Standard at $29.99/month adds unlimited automations and API access. 30-day free trial with no credit card required. See how ShipStation compares to other carriers for your specific package dimensions using the Open Carrier Savings Engine.
Pirate Ship
The only completely free shipping platform with no monthly fee, no per-label fee, and no catch. Access USPS and UPS Commercial Plus rates that beat what you get on USPS.com. Automatically checks USPS Cubic eligibility on every shipment. Best for sellers shipping domestic USPS and UPS at low to medium volume who want to eliminate software cost entirely. No API. Limited automation. Genuinely free.
Shippo
Access discounted USPS, UPS, FedEx, and DHL rates in one platform. Free plan covers 30 labels per month. API-first design makes it the strongest option for sellers who want multi-carrier rate comparison or custom workflow integration. Integrates with Shopify, WooCommerce, Etsy, eBay, and Amazon. Free to start with no credit card required.
EasyShip
The strongest platform for cross-border and international ecommerce. Access rates across 550 plus carriers with up to 91 percent off retail. Calculates import duties, taxes, and landed costs at checkout. DDU and DDP shipping terms supported. Free plan covers 50 shipments per month. Best for sellers shipping internationally who need accurate duty and tax calculation alongside discounted carrier rates.
Which Platform Should You Use?
Rule-of-thumb recommendations based on your volume and shipping requirements.
| Situation | Best Platform |
|---|---|
| You ship under 100 orders per month domestic only | Pirate Ship. Free forever. No justification needed for a monthly fee at that volume. |
| You sell on multiple channels and ship over 100 orders per month | ShipStation. The automation and multi-channel integration saves more time than the subscription costs. For Amazon FBA sellers managing multiple channels see the FBA Fee Calculator to confirm your margin before scaling order volume. |
| You need API access or multi-carrier comparison without ShipStation prices | Shippo. Free plan to start and paid plans below ShipStation at comparable volume. |
| Selling on Shopify? | See the full breakdown of Shopify Shipping rates and limitations at the Shopify Shipping guide. |
| You ship internationally or need duty and tax calculation | EasyShip. The strongest international carrier network with built-in landed cost calculation at checkout. For sellers importing goods internationally see the Import Duty Calculator to model your full landed cost before choosing a fulfillment platform. |
| Selling on Depop, Etsy, or eBay? | See how marketplace fees compare across all five platforms at the Marketplace Fee Guides. |
Calculate Your Shipping Cost Before You Choose a Platform
Run your package dimensions through our free logistics calculators to find your exact baseline rates.
Carrier Savings Engine
Compare UPS, FedEx, USPS Ground Advantage, and USPS Cubic simultaneously on your exact package dimensions before choosing a platform.
DIM Weight Calculator
Check billable weight across carriers using DimMath DIM estimates before buying a label. Not live carrier quotes.
USPS Cubic Calculator
Check if your package qualifies for USPS Cubic pricing before deciding which platform to use for your shipments.
Why USPS Rates Differ by Platform
USPS has three rate tiers. The platform you use determines which one you pay. Here is why Pirate Ship, eBay, and USPS.com show different prices for the same package.
Frequently Asked Questions
Common questions regarding ecommerce shipping software, rate discounts, and platform choices.