When a customer places two orders to the same address before either ships, you can end up sending the same box twice. MergeGuard detects the duplicate and ships both orders together under one tracking number, refunding only the duplicated shipping. Both orders keep their own revenue and tax lines, so your books and reports stay exact. Prefer to cancel an accidental re-order? Do it with a full refund, the original kept. Built for COD and international. Set merge rules and run on autopilot.

• Ship duplicates in one box: one tracking number, only shipping refunded
• Or cancel an accidental re-order — full refund, the original kept
• Merge rules by product, collection, tag, channel or location + autopilot