We will need to support topic-based permissions for sending messages as described in https://github.com/zulip/zulip/issues/19434. At a minimum, the mobile app should give a reasonable error when a user tries to send a message that they are not allowed to send.
We will need to support topic-based permissions for sending messages as described in https://github.com/zulip/zulip/issues/19434. At a minimum, the mobile app should give a reasonable error when a user tries to send a message that they are not allowed to send.
(TBD whether this is a goal for 9.0.)