They probably have a async worker picking from the $BILLING table to send these automated emails. Meanwhile, the system cannot add the detailed description lik

They probably have a async worker picking from the $BILLING table to send these automated emails. Meanwhile, the system cannot add the detailed description likely because: accessing order item would need your personal credential, which only you would have. Extra db calls would cause more time delays and strain on the system. I don’t work for the retail side of Amazon, but that would be my educated guess of the situation.