General Help

Email Labeling (Public, Unclassified, Controlled Unclassified Information)

The Microsoft Outlook application has been updated to enable Sensitivity Labeling, which is used to ensure recipients are aware of the type of information they receive in emails.  On the WREN, the available sensitivity labels (Public, Unclassified, and Controlled Unclassified Information) are described here: What is Controlled Unclassified Information (CUI) – Lexicon (

All email messages are automatically labelled as Unclassified (although the message is labelled unclassified, you will not see any indication of this label).

You may use the sensitivity label menu (shown below) to change the label for your email.  Best practice on the WREN is to use the Sensitivity Label Menu (1) to enable the Show Bar option (2) which will make the label selection more visible for all future emails. Most users will have the Show Bar option available, but if you don’t please use the Sensitivity Label menu to change your labels as required. Note that by going to “Help and Feedback” and selecting “Tell Me More” will take you to the article:  What is Controlled Unclassified Information (CUI) – Lexicon (

Alternatively, you may select either Public, or Controlled Unclassified Information using this menu to apply a visible label to your email within the Outlook application.  At this time, only the Controlled Unclassified Information label results in applying a “CUI” label above and below email content in emails that you send (including external emails).

Below is an email message with the “Show Bar” option enabled.  Note that Unclassified is the default selection.

To change the email to Controlled Unclassified Information, simply click the label (see below).  To change it back simply click on the pencil icon to see the bar again.

Emails with the Controlled Unclassified Information Label appear similar to the image below when sent to other WREN users.  Note that “Controlled Unclassified Information” is visible to the recipient and “CUI” appears at the top and bottom of the email.

Mail this page!

Was this helpful?

Leave A Comment