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 message you have sent compared to your total message 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.