When the "endpoint" has millions of users, like Gmail, it is not an endpoint. It's a hub. I don't care it is technically and end point, in practice it's highl

When the "endpoint" has millions of users, like Gmail, it is not an endpoint. It's a hub. I don't care it is technically and end point, in practice it's highly centralised. It's not like each user chose to reject such and such message. No, Google is rejecting incoming mail for them —in addition to individual spam boxes. That does prevent me from enjoying the end-to-end nature of email to an extent. Oh, and, constant man-in-the-middle spying, which is also not exactly end-to-end.