Yes, this data can be found by running a Usage report in Report Writer
  1. Go to Data Management > select Reports
  2. Select the Report Writer tab
  3. Click Create a New Report
  4. Select Usage from the Report Selection dropdown menu
  5. Mark Site Usage and click Next
  6. The important column for our purposes is Outbound Emails which is under the Usage Statistics section
  7. Skip through the rest of the steps until you get to 6. Identify Report and specify the Report Label and click Next
  8. Click Save Report if you would like to save it, or click Run Report if you would like to run it immediately
This will show you all outbound emails sent from Luminate per month which can be summed in Excel.