Paste each UPS tracking number on the line under its order, then Copy email body into a new email — or Open draft in mail app to start a pre-addressed draft.

Prefilled with this SKU's current count — edit it to the corrected on-hand quantity (e.g. set a negative count back to 0). Saving makes that the baseline as of the date above; later shipments/returns/conversions add on top of it.

Mark a date as a non-ship day (holiday or office closure). Orders that would land on it automatically ship the next business day, in the worklist and reports. Only today or future dates with no already-shipped orders can be added, so past reports never change.