Mindmallow

Mindmallow is a digital worksheet store for people with ADHD and executive-function difficulties, which we designed, built and run ourselves. Browse, buy, download, all handled without a human touching the order.

Selling digital products is not the same as selling physical ones

The buyer expects the file within seconds, on whatever device they bought it on, and they expect to get it again later when they lose it. There is no packing slip and no second chance to make it right. If delivery fails, the customer has paid and received nothing, which is the worst possible first impression.

What it had to get right

• Payment and fulfilment as one unbroken path. Payment taken, file delivered, receipt sent, no manual step in the middle.
• Files that cannot leak. A paid download that is guessable by URL is not a store, it is a giveaway.
• Fast, calm browsing. The audience is people who struggle with clutter and overwhelm, so the interface had to be quiet rather than busy.
• Findable products. Each item needs to stand on its own in search rather than hiding behind a shop page.

What we learned

The single most valuable thing we built was not a feature, it was a check: an automated test of the whole purchase path, because a broken checkout is invisible until somebody complains. We have since found silently broken payment paths on other sites, including our own, purely because we knew to look. That check is now part of how we hand over any site that takes money.

If you sell anything online

Whether it is worksheets, physical stock or a booking, the principle holds: the money path must be monitored, not assumed. That is included in every e-commerce build we do rather than being an upsell.