What is Post-Purchase Survey?

A post-purchase survey is a short question shown to customers right after checkout — most often "How did you hear about us?" — used to attribute sales in the customer's own words rather than through tracking pixels.

The mechanics

Because it comes straight from the buyer at the moment of purchase, it captures influence that pixels miss: view-through discovery, word of mouth, podcasts, or ads seen on one device and bought on another. It is not precise (people misremember and response is partial), but directionally it is one of the best checks on platform-reported attribution. Many brands triangulate pixel data, store analytics, and survey responses to decide where budget actually works.

Signals that matter

• Good: survey placed on the order confirmation page where response rates are highest
• Bad: answer options so vague (just "social media") that responses cannot map back to channels or campaigns
• Bad: ignoring survey data when it repeatedly contradicts what the ad platform claims

Putting it to work

Surveys often reveal which channel or ad style customers actually remember, which tells you where to concentrate creative volume. When a channel shows up strong, generating a batch of fresh UGC-style ads for it inside Claude with Polaris lets you press the advantage the same week. See the full ecommerce ads glossary, or put it into practice with the Polaris AI UGC ad generator.