Ever cashed out a reward and had the code pop up in your inbox before you’d even closed the tab? It feels like nothing happened. Something did, quite a lot actually.

Digital vouchers are a strange product. No weight, no packaging, nobody needs a forklift.

But anyone who’s worked in logistics would recognise most of what goes on behind them: buying stock, deciding how much to hold and getting the order out correctly and on time.

Where the Codes Come From

Let’s start with demand. A big chunk of it comes from GPT sites (“get paid to” platforms) where people answer surveys, test apps or sign up for trials in exchange for points. Loyalty schemes and employee reward programmes add more on top. When users cash out, most of them pick gift cards, and they want them now. Not tomorrow. Now.

The platforms paying out rarely deal with Amazon or Tesco directly. That would mean hundreds of separate contracts, each with its own billing and tech. Instead, they go through aggregators, companies that sign the deals with brands and then offer the whole catalogue through one API. If that sounds a lot like a wholesaler, that’s because it basically is one.

How Much to Keep on the Shelf

This is where it gets more interesting. A platform can buy codes in advance, in bulk, and keep them ready. Or it can request each one from the aggregator the moment a user redeems.

Buying ahead makes sense for busy periods. When demand jumps around Black Friday or Christmas, there’s stock ready to go. The trade-off is cash. Money sitting in unused £10 codes isn’t working anywhere else.

On-demand is leaner. You only pay for what people actually redeem, and the catalogue can be as wide as the aggregator’s.

Most platforms end up somewhere in the middle. They hold a small buffer of the popular stuff, usually low denominations from the big brands, and order everything else as needed. It isn’t elegant. It works.

Getting It Right the First Time

Delivery sounds like the easy part. Send an email, done. In practice, there’s a fair bit of detail involved. The code has to match the user’s country, because a US Amazon card won’t help someone shopping in the UK. The denomination has to be exactly what they chose. And every code needs to go out once, to the right person.

When it all lines up, the user sees none of it. They just get their reward, and that’s the whole point.

Matching the Reward to the Person

One of the nicer shifts in recent years is how much choice users now have. A few years ago, a typical rewards page offered a handful of big names. Today, it’s common for GPT sites and loyalty apps to list hundreds of brands across dozens of countries, from supermarkets and coffee chains to gaming stores and streaming services.

That variety is a logistics achievement in itself. Each brand comes with its own currencies, regional rules and delivery formats, and the aggregator quietly handles all of it. For the platform, adding a new market can be as simple as switching on a new part of the catalogue. For the user, it means a reward they’ll actually use, which is what keeps them coming back.

Why It’s Worth Paying Attention To

What stands out about this corner of the market is how visible everything is. Stock levels, delivery times, popular brands by region, all of it shows up on a dashboard as it happens. Plenty of physical operations would love that kind of view of their own network.

Still, the basics haven’t changed. Work with partners you trust, don’t overstock, send the right thing to the right place and keep the customer’s experience simple. Turns out that applies to a string of 16 characters just as much as to a pallet.