I've started to dabble in the world of Office365 groups and MS Stream. It seems to be all working great but is there a way to disable messaging within a group to user's mailboxes or set it so that members of the group are unable to send messages but the owners are able to send messages out?
I can see the point of this but in my scenario i only want the group to view specific videos within the channel and group and not be able to message each other.
AFAIK theres no way to prohibit them sending mails! You csn set not to allow externals to send to the group but not internally! You can set not to subscribe to group which means they won’t get mails to their private mailbox! This can be overridden by users themselves though.. What you also can do is hide the group from outlook via powershell
I can confirm that the command does not show the group on the left hand panel of outlook online for new users however it's still showing for those users who were members of the group before the command was ran.
I wonder if it takes a little while for the setting to replicate to all the users in the group.