alt Hacker NewsIf the bank really needed to know that its communications are being received, they would send them in a way that would reliably return this information (signature-confirmed postal mail). It's very unlikely that the bank actually needs to know this information.
I appreciate that that has a stronger guarantee of delivery, it is also prohibitive from a costs point of view, which I, as the customer, will be paying either through fees or reduced interest for deposits or higher interests for borrowings.