Mine is empty as well, so I must have found the toggle someplace. Also, I fwd then delete all my gmail to my "real" email account but presumably Google could have already "read" my mail.
I do wish gmail would keep track of all my purchases. Keeping a folder named "shopping" is ok, but it could be so much more.
Next to each purchase I'd love to see: - link to a manual, youtube videos about this product. - remainders when stock is low (for things I might reorder).