You can send and receive messages from the system by using the Messages tool. 

`Explore > Tools > Chat`

If you send a message to a user, and the user is logged in, it will appear as a popup message and the unread messages counter in the top toolbar will be
updated.

<img class="screenshot" alt="Assign" src="{{docs_base_url}}/assets/img/collaboration-tools/chat-1.png">

You can choose to send message to all the users, or to specific user.

<img class="screenshot" alt="Assign" src="{{docs_base_url}}/assets/img/collaboration-tools/chat-2.png">

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