When you first open Messages, you'll see the Messages dashboard.
The dashboard displays subscriber activity, messages per month, and recent and scheduled messages.
"Subscriber Activity" includes how many total subscribers there are, and how many contacts have unsubscribed.
"Messages per Month" shows how many messages and mobile notifications you have sent compared to your total capacity for the month. If you are close to reaching the limit of your capacity, click the "Increase Capacity" button to find out how to request more monthly messages.
"Recent & Scheduled Messages" features a grid calendar with dates that have messages highlighted in blue. Use the arrows to navigate by month and quickly access any messages that have been sent or scheduled.
You can also access Messages permissions from the gear icon on this screen, as well as create a new message using the green button.