I have both an Amex and a Monzo account, and the Monzo account is far more reliable than the Amex when it comes to instant notification. Yes, both have this fea

I have both an Amex and a Monzo account, and the Monzo account is far more reliable than the Amex when it comes to instant notification. Yes, both have this feature, but I've found that only Monzo does it 100% reliably.