As far as us, we apply it to shipping and warranty coverage.
To clarify it a bit, this basically means to have a clear plan on how finished product is delivered to the customer, whether they pick it up or you deliver it by some method. Post delivery activities could apply to any warranty coverage, support provided, installation, etc...
You should have a process that makes it clear what is required and how it is done (that doesn't necessarily mean it has to be a written procedure though). Just look at what the customer requires before you supply the product, how you supply the product, and what they want you to do after you supply the product.
7.5.1 (F) Control of production and service provision
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