To see previous messages sent to participants, go to the Leaderboard tab, click on the ‘Send a message’ box and select the participant or group of participants that you sent the message to.
Once you have selected the specific team or individual (or all participants), a blue ‘Messages’ link in the bottom right-hand corner of the box will appear. Click ‘Messages’ to view previous messages sent.
From here, you can see the time the message was sent and the content. As well, you can select the gear icon to edit or delete any previous messages.