You've done a good job of (inadvertently?) not providing Google with emails it knows how to scrape. Basically what they are doing is scraping common email layo

You've done a good job of (inadvertently?) not providing Google with emails it knows how to scrape. Basically what they are doing is scraping common email layouts like Amazon order/delivery confirmations. If you don't have those well known confirmation formats arriving in your inbox, they have nothing to scrape.