One piece that's missing from this post is -- what did the email containing the tracking number look like? GMail, for example, only parses out package numbers

One piece that's missing from this post is -- what did the email containing the tracking number look like? GMail, for example, only parses out package numbers if the retailer sends schema.org markup for it. (https://developers.google.com/gmail/markup/reference/parcel-delivery https://developers.google.com/gmail/markup/reference/parcel-...)