> Any message system that is not end-to-end encrypted is going to have this property. Yes, but in a different sense. I use Mattermost for some chatting. Matter

> Any message system that is not end-to-end encrypted is going to have this property. Yes, but in a different sense. I use Mattermost for some chatting. Mattermost is not E2EE, nor is it federated. I only have to trust my admins with my private messages, because the recipient has the same admins. In a federated environment, I may trust my admins, but it is not particularly obvious that I must also trust the recipients admins. > GMail can read your emails Only if I send an unencrypted email to someone who uses GMail. Which yes, is the same security flaw that is being described in the post. None of the other things you listed are federated. They should also not be trusted, but that's more obvious.