• Success Criterion 3.3.4
  • Conformance level AA

One-Click Order Placed With No Chance to Review It First

3.3.4 — Error Prevention (Legal, Financial, Data)

Scenario

Setting

An email client's compose window

What’s wrong

One-click purchase/submission of binding orders with no review step, no confirm checkbox, and no cancel/undo window.

Example 

<!-- smart-reply chips shown above the compose box when replying to a delivery receipt -->
<div class="smart-reply-bar">
  <button onclick="placeOrder('order-4471')">Reorder now</button>
  <button onclick="insertReply('Thanks!')">Thanks!</button>
</div>
<!-- tapping the chip charges the saved card immediately, no compose draft or review screen opens -->

Why it matters

A user replying to a delivery receipt taps the 'Reorder now' suggestion chip out of curiosity while composing a reply, and is charged for a real order before realizing what the chip does.

How to test

Complete a one-click purchase flow: if there's no review step and no confirm checkbox before the order is placed, it fails.

How to fix

A quick-action suggestion still needs its own review-and-confirm step, exactly like a checkout page would, since a single tap in a compose window is just as binding as one anywhere else.

<div class="smart-reply-bar">
  <button onclick="showOrderReview('order-4471')">Reorder now</button>
  <button onclick="insertReply('Thanks!')">Thanks!</button>
</div>
<!-- opens a review screen listing items, price, and address with separate Confirm and Cancel actions -->

Outcome

The user reviews the order details first and only pays after actively confirming them, without ever leaving the compose window.

Who is affected

People with cognitive disabilities and motor impairments who may activate a button unintentionally while scrolling or tapping through email.

Learn more

Related scenarios