My store sends duplicate order confirmation emails.
This is usually caused by: (1) Multiple email modules active simultaneously (e.g., PrestaShop's built-in email + a custom email module). (2) A payment module that triggers the order confirmation twice due to a webhook + redirect both confirming the payment. (3) The customer clicking the "Pay" button twice quickly. Check your module list for duplicate email functionality, and check your payment module's webhook configuration. If the problem is intermittent, it is likely a double-click or double-webhook issue.
Learn more: PrestaShop email deliverability guide.
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