Get someone’s attention by mentioning them: type @ before the person’s name. Matching names will display as you type. Select the name you want from the list and the name will turn blue in your text box (Figure 1):
Figure 1 @mention
You can also mention @all or @online in chats with less than 30 members (Figure 2):
Figure 2 @mention All Members/All Online
When you send your message, the person you mention receives a red alert in their notifications. Likewise, if someone @mentions you, it appears in your notifications in red as well (Figure 3):
Figure 3 View @mentions
Your mentions appear in a darker red to help you identify where you are tagged (Figure 4):
Figure 4 View @mentions in a chat
If you are mentioned in a public room where you are not a member, you will receive the notification but you will not be able to see the message unless you join the room (Figure 5, Figure 6 and Figure 7):
Figure 5 @mention notification
Figure 6 Join a room
Figure 7 Message
If you are mentioned in a private room where you are not a member, you will not receive any notification.