Keychat does not use outbox. My initial impression is that it may not be suitable for a chat app. I’m not sure if this impression is correct; I need to learn more.

In the chat room’s security settings page, users can specify their own receiving relays; however, this feature is not yet fully implemented. Alternatively, when users modify their relay list, we should consider prompting them to notify their friends of the changes via the old relay first.