Growstall
Growstall blog

Marketplace customer service, measured.

What the messages, orders and refunds of Mirakl and Amazon sellers actually say — with the numbers, the maths and the mistakes, so you can act on Monday.

CarriersSept 2026 · 5 min

Delivery complaints per 100 orders, by carrier: 6.7 versus 2.3

Same products, same customers, eight carrier-marketplace pairs. The gap between the best and the worst courier is bigger than the gap between your best and worst product, and it is measurable from your inbox.

See these numbers for your own marketplacesConnect one marketplace with your own API key. Contact rate, refund reasons and carrier complaints appear after the first sync.
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