IHTM02092 - Communications: Incoming correspondence: letters addressed personally
The post room treats as official all personally addressed post that is not obviously private. This post is opened and handled in the normal way.
This does not apply to internal departmental correspondence (such as, from Personnel Division) which is addressed personally and should be delivered unopened.
If you need to receive personal correspondence at work, ensure that the correspondents mark envelopes as Personal' or
Private’ or indicate the personal nature of the contents in some other obvious manner.