ToolKit_RestoreReturnReceipt=Yes restores the ReturnReceipt field for quarantine emails, for which a receipt confirmation was enabled in the original, when the email is resent from the quarantine. This restores the request for a receipt confirmation. Only applies to emails quarantined as of iQ.Suite Version 12.2. Default: No. Also refer to: ToolKit_RestoreReturnReceiptDays.