Duplicate customers pile up from guest checkouts, POS sales, imports and typos, and Shopify only merges two profiles at a time by hand. Twinfold scans your whole customer list and groups likely duplicates, showing why each group matched: email variants, the same phone number, or the same name and address. Choose the profile and details to keep, preview the result, then merge many groups in one run. Profiles Shopify cannot merge are flagged with the reason.

• Scan your whole customer list; nothing changes until you confirm a merge
• See why profiles match: email variants, shared phone, same name and address
• Pick which profile, name, phone and address to keep, then preview every merge
• Merge many duplicate groups in one run, with progress, history and a CSV log
• Clear reasons when Shopify refuses a merge, like store credit or subscriptions