At least, it would act as a partial (read 'plausible deniability'), i.e.: no tracking, for small-ish orders, taking and storing for three weeks a photo of a ready to send shipment with partially blurred out label, of course.
Surely, it's not a proof of a guarantee that the order was shipped but it's something more than just a vendor's word for it.
it could help but then youve got a load of pictures that should they fall into LE hands will be the difference between plausible denaibiltiy and sucking Bubbas dick