Which banks send you an email for every purchase?

I'm building Bankless Budget, a budget app that reads the purchase alert emails your bank already sends instead of connecting to your bank account. It launches here on Tuesday.

Manual-entry apps never worked for me. I'd forget a receipt here and there, so my tracking was never 100% accurate. Every automatic app I found wanted access to my actual bank and credit card accounts, which always seemed like more access than it needed. My first try was uploading statements, but that meant keeping a parser for each bank's layout, and it was never real time. So now AI reads the alert email instead.

We have setup guides for Chase, American Express, Capital One, Wells Fargo and U.S. Bank, and most big banks will email you for each purchase once you turn it on.

Which bank or card do you use, and does it email you per purchase? I'm deciding which guides to write next. (US and Gmail only for now.)