pool merge fixed Dear Alice Smith at Acme Corp: invoice INV-2026-000123 of $1,250.00 (ship $12.50) due 2026-09-24. Call +1 555 010 1234. Agent James Smith. Unsub http://x/u/abc. Custom A-7731 unknown: [] missing: [] used: ['CompanyName', 'CompanyPhone', 'DueDate', 'FirstName', 'InvoiceDate', 'LastName', 'OrderID', 'RandomInvoiceNumber', 'RandomName', 'RandomShippingCharge', 'RandomTotal', 'UnsubscribeLink']