1.  At the top of your dashboard, click the message icon to open the Inbox page. All messages will be displayed.

  2. Select the checkbox for the message you want to delete or select the checkbox in the header. All messages that are currently visible on the page will be selected.


                                                                         Fig 1.


                                                                       Fig 2.

  1. Select the Delete option from the drop down and click Ok as depicted in Fig 2.
For more information, watch this-