How to Switch Delivery Carriers Safely

Switching delivery carriers is one of the more disruptive operational changes an ecommerce brand can make. It touches your warehouse process, your checkout, your customer communications, your returns flow, and your reporting. Done badly, it creates a period of degraded delivery performance at exactly the moment you're trying to improve things. Done well, it's largely invisible to your customers.

Most brands switch carriers for one of three reasons: persistent underperformance from their current carrier, a significant pricing change, or a strategic shift in what they need from delivery, sustainability credentials, better technology, or improved geographic coverage. Whatever the reason, the switching process itself follows the same logic.

Before you switch: get your data in order

The worst time to realise you don't have clean delivery data is when you're trying to evaluate a new carrier against your current one. Before you start any switching process, pull together a clear picture of where you are.

That means on-time delivery rate by region and service level, first-attempt success rate, damage and loss rates, cost per parcel including all surcharges, and customer complaint volume attributable to delivery. This baseline does two things. It tells you what you're actually trying to improve, which should shape the requirements you set for a new carrier. And it gives you a comparison point once you've switched, so you can measure whether performance has improved.

If your current carrier can't provide this data clearly, that's itself useful information about the relationship you're moving away from.

How to evaluate and select a new carrier

Carrier selection at this stage should be driven by requirements, not by relationships or marketing materials. You know what your current carrier is getting wrong. The question is whether a prospective carrier can demonstrably do better.

Ask for performance data specific to your parcel profile and geographies. Ask how they handle peak periods and what capacity planning looks like. Ask for references from brands with a similar order volume and product mix. Ask about their technology integrations and how long implementation typically takes. Ask what the claims process looks like and how quickly claims are typically resolved.

Pricing is part of the evaluation, but it shouldn't be the lead variable. A carrier that is ten percent cheaper but delivers five percent fewer parcels on time will almost always cost you more once you factor in redeliveries, replacements, and customer service contacts.

Running a parallel period

The safest way to switch carriers is not to switch all at once. Running a parallel period, where you split volume between your existing carrier and the new one, gives you real performance data before you've fully committed.

This approach has a few practical benefits. It lets you identify integration or process issues before they affect your full order volume. It gives your team time to build familiarity with the new carrier's systems and processes. And it gives you leverage in the commercial conversation if the new carrier knows they're being evaluated against a live alternative.

The split doesn't need to be equal. Starting the new carrier on ten or twenty percent of volume, ideally in a specific region or channel, is enough to generate meaningful data without significant operational risk. Run the parallel period for four to six weeks before making a decision about full migration.

The practical mechanics of switching

Once you've decided to move, the operational checklist covers a few key areas.

Integration: your ecommerce platform, warehouse management system, and order management system all need to connect to the new carrier's API or label generation system. Build in testing time and don't go live until end-to-end label generation, tracking updates, and returns processing have all been confirmed to work correctly.

Cutoff times and collection schedules: these will almost certainly change with a new carrier. Update your checkout delivery promises, your dispatch team's schedules, and any automated customer communications that reference specific timeframes.

Returns: if your returns process is integrated with your outbound carrier, switching outbound may require a parallel change to your returns flow. Confirm this in advance rather than discovering it post-launch.

Customer communications: most customers won't notice a carrier switch if delivery performance is maintained or improved. You don't need to announce it. But your customer service team needs to know, because they'll receive queries about tracking links and delivery updates that reference the new carrier's systems.

How to spot if the switch isn't working

The first two to four weeks after a full carrier migration are the highest-risk period. Volume is live, but you haven't had enough time to identify systemic issues.

Watch your core metrics daily in this window: on-time rate, first-attempt rate, and customer complaint volume. A spike in any of these in the first week is a signal to investigate immediately, not at your next monthly review. Early intervention on a process issue is significantly cheaper than letting it run for a month.

Also watch for regional variation. A carrier that performs well nationally can still have weak spots in specific depots or geographies. If complaints are clustering in a particular area, that's a depot-level issue worth raising directly with your account manager.

When switching isn't the answer

Not every delivery performance problem is a carrier problem. Before switching, it's worth being honest about whether the issues you're experiencing are within the carrier's control.

Address data quality, late dispatch from your warehouse, unrealistic delivery promises at checkout, and poor returns processing are all things that a new carrier will inherit. Switching under those conditions tends to produce the same problems with a different logo on the tracking page.

Fix what's fixable on your side before you switch. The carrier relationship you move into will be more productive, and the performance comparison will be cleaner.

HIVED makes carrier migration straightforward, with dedicated onboarding support and clear performance data from day one. If you're considering a switch, [talk to us about how it works.]