Some Qs re Pvt Threads 1) Is it possible to un-invite an already invited user? Ie. revoking the access? 2) Is it possible to allow a user to join a private thread only temporarily by granting the user just a read access? 3) If no reaction is coming from the invited person, is it possible to know whether the invited person has visited (read) the private thread? It would be useful for the inviter to know this by receiving a notification from the system when the invited person visits (reads) the private thread for the first time. Important also when sharing sensitive information via this method. For a better method see the suggestion below. 4) Invited user should be allowed to enter the private thread only if he/she accepts the invitation. And then the system should inform the inviter via a notification.
No. But an invited user can remove himself from the private thread by deleting the thread. No. In regards to 3 and 4, those features are not available but they are good suggestions for the next version.