The Pennies Foundation
Pennies is a UK charity that enables micro-donations at the point of payment — when you're checking out online or in-store, you're offered the option to round up your transaction by a few pence to charity. The donations are tiny individually; collectively, they've raised millions for charities across the UK.
The engineering challenge is invisible by design: micro-donations must be frictionless. Any friction — an extra click, a slow page load, a confusing UI — reduces donation rates. The best implementations are barely noticeable.
The Freddie's Flowers Integration
At Freddie's Flowers, we integrated Pennies into our checkout flow. A subscriber completing their account management could opt in to rounding up their next payment. The entire implementation needed to be:
- ·Fast (no perceptible latency to the checkout flow)
- ·Reliable (donation data captured accurately even if downstream systems had issues)
- ·Private (donation choices are personal — proper data handling)
- ·Reversible (subscribers should be able to opt in and out easily)
The payment integration required coordination with our payment provider (Braintree) to add the donation amount to transaction metadata in a Pennies-compatible format. The reporting integration required sending donation confirmation data to Pennies' systems asynchronously.
The technical complexity was moderate. But getting the UX right — making the opt-in feel natural rather than pressured, ensuring the confirmation messaging was clear — took careful iteration.
Why "Unsung Hero"
The award category resonated. The engineers and product people who make micro-donation integrations work well do quiet, careful work that rarely gets recognition. There's no "shipped micro-donations" announcement on TechCrunch. The KPI is "donation rate" — a metric that lives in a Looker dashboard most people never look at.
But the cumulative effect is real: hundreds of thousands of small donations, adding up to meaningful sums for charities, enabled by clean, reliable engineering.
Freddie's Flowers also won the Partnership Breakthrough Award at the same ceremony — recognition for the organisation's commitment to the Pennies partnership, not just the technical implementation.
The Broader Point
Technology companies have an unusual leverage point for charitable impact. Our checkout flows process millions of transactions. Adding a micro-donation mechanism to those flows costs engineering time measured in days or weeks. The charitable output, over years, can be measured in hundreds of thousands of pounds.
If your company processes consumer transactions and you haven't evaluated micro-donation integration, it's worth a conversation. The engineering is not the hard part — the hard part is the organisational will to prioritise it.