Recipient and
Send Status in the Outbox Overview 
Use
As of 4.6C, users receive an overview of the recipients of sent objects directly in the outbox list. If objects have one recipient only, the name of the recipient and the send status (successful, in transit, with errors) is displayed. If objects have more than one recipient, the number of recipients is displayed. The names and the send status can be accessed in the recipient list.
For more information, see the documentation on the Business Workplace.