As you probably know, Exchange has always been able to let senders to recall messages (delivered to recipients in the same organization).
The recall feature has always been misunderstood by end-users as it was not possible to recall message already read or sent outside the organization.
Well, the recall feature is being updated to now also allows recalling read message – no change when sent outside the organization.
The update is scheduled to be rolled out mid November.
Exchange administrators can control if they want to keep on (by default) or turn off the new ‘recall read message’; the control is already available.
To manage the ‘recall read message’ capability, logon to your Exchange Online administration portal (https://admin.exchange.microsoft.com/) to access the Settings blade and then the Mail flow section
