Shipping quietly eats an online store's margin — in postage you overpay for and hours spent at the post office. These are the tools that compare carriers and print labels cheaper, and the 3PLs that pick, pack and ship for you once you'd rather not — built for a growing store, not an enterprise supply chain.
A practical guide to the software and services online stores use to buy postage, compare carriers and outsource fulfilment — grouped by how much you want to handle yourself.
This page has affiliate links: we earn a commission if you sign up through a tool. Every tool here runs an affiliate programme — that's the pool we work from — but which ones we list and how we group them is our editorial call, and the commission never changes it.We open each tool's live site by hand where we can; one here (Interparcel) blocks automated checks, so we describe it from public positioning and flag it on its card.
Reviewed: 2026-07-17
The everyday job: compare carrier rates, print labels and skip the post office. This is where most stores start and where the savings are.
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Multi-carrier shipping software for ecommerce — compare rates across couriers, print labels and show accurate delivery costs at checkout, with a free tier.
Live-checked 2026-07-17.
A widely used shipping platform that pulls orders from every channel, batches labels and automates fulfilment for busy stores.
Live-checked 2026-07-17.
Print USPS postage and shipping labels from your desk at discounted rates — a simple mailroom for US small businesses.
Live-checked 2026-07-17.
A UK courier-comparison service that books discounted parcel delivery across major carriers from one account.
Their site blocks automated checks, so this is described from the provider's own public positioning.
When picking and packing stops being a good use of your time: the 3PL most growing stores land on to store stock and ship orders for them.
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A global ecommerce fulfilment network — store inventory in its warehouses and it picks, packs and ships your orders, with distributed inventory options.
Live-checked 2026-07-17.
We looked at more shipping tools than made the list. A couple we left off for this reader:
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