As soon as your order has shipped, you will receive a shipping confirmation email to the email address associated with your order (No email? Click here).
There is however one exception to this. We have a smart-dumb back-end stock system - if you place multiple orders to the same address, it will try to merge the orders into one parcel, which means:
Order A + Order B = Order C
As we only ship order C, orders A + B do not update, so no shipping confirmation is sent. It's something we're working on!