Actually, four emails, not ten. Author writes as if it’s some conspiracy of sellers and shipping companies to maximise the number of emails. Each sends with any excuse they have. The email is treated as a drop box of transactional notes that business sends to customers inbox so customer can always find that info if they would have a need. It’s not frivolous sending that we need to fix but some standard of “receipt” folders, like Gmail auto folders in half-assed way. So these emails bypass inbox directly to special folder. And it should have a standard name so customer service can say “look in your Receipts folder”.

And Two “We received your order” is unnecessary, as well as “create account”. But if they send those it must be working? Or they send even is only handful of people click on them?