> By that logic, jacksmith@example.com and johnjsmith@example.com could be delivered to the same mailbox. They absolutely could. Netflix can't assume they are

> By that logic, jacksmith@example.com and johnjsmith@example.com could be delivered to the same mailbox. They absolutely could. Netflix can't assume they are or they aren't. Which means Netflix is doing the correct thing here. All they can know is that the emails are potentially different and so they should treat them as different emails.