I'm trying to add comments to the ship email I sent, but the checkbox "Append Comments" is disabled. Does anyone know why this is happening?
In order to be able to check the "Append Comments" you need to check the "Email Copy of Shipment" checkbox right below the "Append Comments" checkbox.
If you don't have the "Email Copy of Shipment" checkbox it means it is disabled from the system->configuration section.
You can enable it from